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10 Best Pond Filters – [Reviews & Guide 2019]

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Best Pond Filters – Buyer’s Guide

Best pond filter can be a very useful thing to buy if you want to purify the water of your pond to maintain the environment of the water. For example, UV pond filters pass water through UV rays and eliminate harmful bacteria. It will be beneficial for the fish which you keep in the pond. There are also other types of water filtration. Let’s proceed and find out what pond filters exist and which of them can be used in particular cases.

PRODUCTPOND SIZE
(GALLONS)
FLOW RATE
(GPH)
UV CLARIFIERFILTRATION STAGES 
Grech CPF-2500 Pond Bio Pressure Filter(Editor's Choice)Up To 2500

1600

YesBiological and mechanicalCheck Price
TetraPond 26596 Waterfall FilterUp to 1000500 to 4500 NoBiological and mechanicalCheck Price
XtremepowerUS Koi Pond Bio FilterUp To 4000
-YesBiologicalCheck Price
TetraPond Submersible Flat Box FilterUp To 500200 to 2000No- Check Price
POND BOSS Filter KitUp to 500 gallons320No-Check Price
TetraPond Clear Choice Biofilter PF-1
Up to 1200325 to 550 NoBiological and mechanicalCheck Price
Goplus Pressure Bio Filter 4000GALUp To 4000-YesBiologicalCheck Price
TetraPond Filtration Fountain Kit75 to 250
325
No-Check Price
Best Choice Products 4000L Pressure Bio Filter1500 to 2500
4000
YesBiologicalCheck Price
Jebao CF-10 Pond Bio Filter850 to 1250-YesBiological and mechanicalCheck Price

1. Grech CPF-2500 Pond Bio Pressure Filter UVC 13-watt Up to 1600 Gallons – Best without Pump

Grech CPF-2500 Pond Bio Pressure Filter UVC 13-watt Up to 1600 Gallons review

When you hear about Grech CPF-2500 Pond Bio Pressure Filter, what should go through your mind is a pond filter which has great potential while being very easy to maintain and clean.  Unlike other filter products, the Grech CPF-2500 Pond Bio Pressure Filter simplified cleaning with the help of numerous methods of filtration and a quick handle cleaning system.  This filtration system uses both biological and mechanical filtration chambers that helps in extra filtration.

This filter is responsible for generating bacteria that gets rid of nitrate and ammonia that is found in your pond. When these impurities are removed, the fish in the pond can enjoy clean and clear water. The Grech CPF-2500 Pond Bio Pressure Filter can clean up to 900 gallons of water with a reasonable number of fishes and plant in it. It can also handle a clear 1,600 gallon in a decorative pond. This filter does not come with its own pump and you have to pay extra to get one.

Pros
  • This filter is very functional.
  • Integrates a dual filtration system.
  • It has a quick handle cleaning system.
  • It is very easy to maintain and clean.
  • It makes use of Ultraviolet bulb for cleaning.
Cons
  • You have to purchase the pump separately.

Author’s Opinion

The Grech CPF-2500 Pond Bio Pressure Filter simplifies cleaning with the help of numerous methods of filtration and a quick handle cleaning system. The filter however does not come with a pump meaning you have to pay extra to get that added to your filtration kit. If you want a filter that you want to use immediately, this filter is not the one for you. However, this product is still a great one with all the specifications found on it.

2. TetraPond 26596 Waterfall Filter – Best Filter and Waterfall

TetraPond 26596 Waterfall Filter review

This pond filter attaches itself to an external pump or a submersible which helps in the formation of a 12” waterfall which is enough for ponds that is not more than 1,000 gallons. In as much as the media which provides biological filtration does not come with the package, the TetraPond 26596 Waterfall Filter do offer both types of filtration with ease.

Both types of filtration system help in improving the nitrogen cycle of the pond. As beneficial bacteria colonize in both filtration system, it turns toxic nitrates which are harmful for organic life into nitrates that nourishes the environment.  The pumps of this filter can handle flow rates of from about 500 gallons to about 4,500 gallons per minute and the waterfall provides the pond with an attractive view.  The TetraPond 26596 Waterfall Filter however provides aeration of water to your pond giving it a clean and clear water.

Pros
  • It improves water aeration in your pond.
  • It has both mechanical and biological filtration system.
  • It uses bio-activators or lava rocks for biological filtration.
  • It is a durable product.
Cons
  • You need to buy the media for biological filtration separately.
  • Users find it hard connecting standard size tubing to filter.

Author’s Opinion

The TetraPond 26596 Waterfall Filter helps you choose between bio-activators or lava rocks, both of which can be purchased differently from the main package. Although bio-activator is more common today, lava rocks still act as a traditional choice which would give you one of the best filtration experiences your pond would ever have. I totally recommend this product.

3. XtremepowerUS Koi Pressure Boi Filter Pond Garden Pond Pump Filter – Best with Plants

XtremepowerUS Koi Pressure Boi Filter Pond Garden Pond Pump Filter review

The XtremepowerUS Koi Pressure Boi Filter is really a powerful filter.  This filter boasts of filtering at the rate of 10,000 liters per hour and it is very efficient for ponds that contain up to 1,500 gallons of water.  This pond filter has 3 layers of sponges which provides a perfect environment and conditions for good bacteria to thrive.

The XtremepowerUS Koi Pressure Boi Filter have 3 different connections: 1½”, 1¼” and ¾”. It also packs a UV light (13 watt) which helps users break up algae colonies so users don’t have to worry about those bad impurities. The cord of this pond filter is only 15 feet long but this makes setting up easier.

Pros
  • It has a UV light system.
  • Includes multiple attachments.
  • It can filter up to 10,000 liters per hour.
  • Features a long 15 ft power cord for easy start up.
  • It is very durable.
Cons
  • Re-assembling can be very tough after cleaning.
  • The UV replacement bulbs can be hard to get.

Author’s Opinion

All we can about the XtremepowerUS Koi Pressure Boi Filter is that it is a powerful pond filter which can handle an average pond. It boasts of a filtration system which can handle about 10,000 litres of water per hour, making it a perfect choice for large ponds. Although as tough as it can be resembling after cleaning, it is still a great product.

4. TetraPond Submersible Flat Box Filter For Ponds Up To 500 Gallons – Best without Fish Filter

TetraPond Submersible Flat Box Filter For Ponds Up To 500 Gallons review

Just as the name implies, the TetraPond Submersible Flat Box Filter For ponds offers mechanical filtration of fine and coarse particles for ponds that contain up to 500 gallons. This pond filter shaped like a box also comes with sufficient room in which users can add bio filters.  The filter of this product works just fine with flow rates between 200 gallons per hour and 2000 gallons per hour. 

Users can easily detach filter from the tubing to remove unwanted waste particles from the system during cleaning.

Pros
  • It can handle flow rates of up to 200 gallons to 2000 gallons per hour.
  • There is enough space in the case for Biological filtration.
  • It is made to be durable.
  • It helps clean your pond while stopping unwanted waste material from getting into it.
  • The filter can fit a vast number of ponds.
Cons
  • This filter offers only mechanical filtration.
  • Users need to submerge this filter with rocks to avoid it from floating.

Author’s Opinion

The TetraPond Submersible Flat Box Filter For ponds is a pond filter that focuses mainly on mechanical filtration but there is a space in which biological filtration can be integrated. It can handle ponds that are above 500 gallons and it has an impressive flow rate from 200 gallons per hour to 2,000 gallons per hour. I totally recommend this product.

5. POND BOSS Filter Kit with Pump – Best without UV

POND BOSS Filter Kit with Pump review

 The POND BOSS Filter Kit with Pump includes an eco-friendly water kit such as the pump and the nozzle which is quiet, energy efficient and it is good for the environment.  If you want to purchase a pond filter and at the same time, you want to save money rather than buying the nozzle, filter and the pump, consider purchasing this pond filter. The mechanical filtration stage of this product consists of two pads; one is responsible for capturing small minute particles while the other one handles the larger particles.

Users can increase the life of this product using pads and a system of sloping lid to reduce the maintenance it has to undergo.  The POND BOSS Filter Kit with Pump is very easy to install and you can get it up and running in a few minutes. 

Pros
  • It undergoes both mechanical and biological filtration.
  • The fountain seems very perfect for aeration.
  • It gives you crystal clear water.
  • It is a great product for the price.
  • The pads and sloping lid are designed to improve maintenance.
Cons
  • Most users complain that this product is very lightweight and it has to be weighed down.

Author’s Opinion

The POND BOSS Filter Kit with Pump is an eco-friendly option that is energy efficient and quiet. This innovative garden product lets its users enhance their pond area, promoting cleanliness. This pond filter specializes in innovative and energy efficient water gardening product so it can help you enhance and maintain your ponds. I totally recommend this product.

6. TetraPond Clear Choice Biofilter PF-1 For Efficient Filtration – Best to Remove Algae

TetraPond Clear Choice Biofilter PF-1 For Efficient Filtration review

This pond filter possess all the great features you can find in any pond filter.  The product’s quality mechanism makes the TetraPond Clear Choice Biofilter PF-1 For Efficient Filtration easier to clean due to the presence of the backflush valve.  This product uses both biological and mechanical filtration system to clean and filter the water found inside your pond. It also integrates an Ultraviolet light system which kills off algae in your pond.

 The filtration system found in this pond filter can handle a capacity of 1,500 gallons and it can clean the water crystal clear without any difficulty.  This makes it a perfect product which users can use on their pond consistently.

Pros
  • It has both mechanical and biological filtration.
  • It integrates UV light for clarification.
  • It has a bio-active filter which provides unrestricted water flow.
  • It seems durable.
  • It is affordable.
Cons
  • Users complain a lot about the backflush filter.
  • Users have to backflush every week which can be very stressful.

Author’s Opinion

The main problem with the TetraPond Clear Choice Biofilter PF-1 For Efficient Filtration is that it doesn’t come with specific instructions or manuals especially when it comes to the backflush valve. New users would find it really hard because of this issue. If you do not care about the stress or you want more adventure, you can go for this pond filter.

7. Goplus Pressure Bio Filter 4000GAL – Best for 1000 Gallons

Goplus Pressure Bio Filter 4000GAL review

The Goplus Pressure Bio Filter 4000GAL is suitable choice for relatively inexperienced fish farmers.  This pond filter comes with an Ultraviolet lighting system that allows user to control the development of algae in the pond.  The ultraviolet light does not only get rid of impure elements but it also ensures that the fish found in your pond live longer than normal.

The Goplus Pressure Bio Filter 4000GAL has a tough casing on its exterior. This allows customers to place the pond filter underground, near the pond or above it.  The automatic cleaning function ensures that this filtration system can clean up to 2,500 gallons of water. 

Pros
  • It comes with an integrated UV bulb system.
  • It is durable.
  • It has a sturdy casing.
  • It can handle up to 2,500 gallons of water.
  • It can be placed underground or above or near the pool.
Cons
  • This product has no clear instruction.

Author’s Opinion

The Goplus Pressure Bio Filter 4000GAL is a great product to purchase, especially if you are an inexperienced fish farmer. However, the manual seems too difficult to understand by users making it challenging to set up. In as much as that is the case, this filtration kit provides its users with all the necessary specifications needed to clean your pond.

8. TetraPond Filtration Fountain Kit – Best Filter and Pump kits

TetraPond Filtration Fountain Kit review

The TetraPond Filtration Fountain Kit is a pond filter that boasts of using both fine and coarse pad for a submersible pump. It also offers mechanical filtration for its customers. Known for using a fountain assembly with three heads, the company created different shapes using a diverter valve and a swivel adjuster to set the fountain heads at the same level.

A knob is also found on this product which controls the width of the water as the fountain pumps it out at the rate of about 325 gallons per hour.  The flow rate of this product is also continent for ponds that require about 250 gallons as you can choose a variety of choices available. 

Pros
  • Three fountain heads gives three flow options to users.
  • It comes with a complete kit with all the necessary components.
  • This filter aids in developing a variety of ponds.
  • It is easy to install once it is assembled.
  • It is a very effective filter.
Cons
  • Assembling can be hard.
  • When in use, the filter box results to floating.

Author’s Opinion

For smaller ponds, the TetraPond Filtration Fountain Kit does. It only keep your eco-environment clean around your pond but it comes with three different heads to choose from. It also includes a submersible filter that helps reduce fountain and pump clogging. The TetraPond Filtration Fountain Kit is responsible for adding additional aeration to the water which sits in your pond. This product is recommended.

9. Best Choice Products 4000L Pressure Bio Filter for Pond – Best with UV Clarifier

Best Choice Products 4000L Pressure Bio Filter for Pond review

Best Choice Products or otherwise known as BCP for short is definitely one which is more likely brand to appear on this list. Best Choice Products was founded about 10 years ago and they started small by selling pool table at a second hand price. Now that we have gotten that out of the books, the BCP has its ups and downs and the features which this biofilter packs can be compared to most products on this list. The BCP is a good choice for a pond filter with koi fish. This is as a result of a combination of its cleaning capacity and the flow rate that the BCP product can use.

Rating at 4000 GPH, this pond filter was one of the fastest cleaning filters we have on this list. Besides, this filter is rated for a 2,500-gallon pond. The Best Choice Products 4000L Pressure Bio Filter for Pond is a pond filter which is medium sized and it is specifically designed for koi fish which actually do better at 1-½ meters deep.
Pros
  • It has an excellent flow rate.
  • It is affordable.
  • It has a UV clarifier.
  • It has a long cord for easy setup.
  • It has multiple attachments.
  • It can filter 12,000 liters per hour.
Cons
  • It is very hard to maintain.
  • electronics found in this filter does not last long.

Author’s Opinion

The Best Choice Products 4000L Pressure Bio Filter for Pond is a biological filter system which would help filter and protect your pond from waste and harmful unwanted materials. Although there are inconveniences during cleaning and maintaining, it is still a great product to purchase or go for. We love how it can filter a large flow of water without breaking down. I totally recommend this product.

10. Jebao CF-10 Pressured Pond Bio Filter – Best for Koi

Jebao CF-10 Pressured Pond Bio Filter review

The Jebao CF-10 Pressured Pond Bio Filter is a natural pond filter which one has to check out. It comes with an integrated 13 watt UVC, a cleaning indicator, a UVC vowing window and a backwash facility. This filtration system uses both biological and mechanical stages which both are very important to your pond.  The Jebao CF-10 Pressured Pond Bio Filter can filter as much as 1,500 gallons if there are only plants in the pond, 1,000 gallons if there are plants with very few small fish and 500 gallons if you own a pond that contains a large fish such as koi. 

The performance of this filtration system is heightened by the use of quartz glass by the manufacturing company.  While normal glasses can reduce ultraviolet rays for up to 90%, the quartz glass makes sure that most of the light reaches the deeper part of the pond.  The well-designed purification system found in the filter has a warning role which involves signaling the need for cleaning.

Pros
  • It undergoes both stages of filtration; mechanical and biological.
  • It can filter up to 12,000 liters while holding fish.
  • It is a very durable product.
  • An indicator light shows when cleaning is required.
  • It is very easy to set up.
  • It has a great backwash feature.
Cons
  • The quality of the material seems too cheap.
  • Most users have devised their own means of providing their solutions.

Author’s Opinion

If you are interested in getting a high-tec filtration system, the Jebao CF-10 Pressured Pond Bio Filter is the best choice for you out there. It uses a special Ultraviolet penetration quartz glass to maximize the Ultraviolet efficiency. The UV lamp in turn helps remove algae and bacterial from your pond while providing you a healthy and encouraging environment.

Buyer’s guide – choose the best pond filters for your need

Best Koi Pond Filters and Pumps - Reviews & Guide

If you want to purchase the best filters for your pond, it is extremely important to have an idea about the size of the pond. You should check whether the filter has the capacity to clean the amount of water that you have in the pond.

You should also check the health of the water. Some of the filters are capable of only doing mechanical cleaning.  So, if you have problems of biological bacteria in your pond that water filter will not be perfect for you. 

You should always go for those pond water filters that are energy efficient. It should also have the different layers of purification that will ensure that both bigger and smaller size debris can be cleaned from the pond.

The pond pump filter should be made of quality material so that you can use them for a longer time without changing its components. The technology of cleaning should be perfect so that it can clean the water quickly.

Cleaning the filter can be another headache. So, you should purchase those filters only with which maintenance will not be a problem.

How pond filter works?

A pond filter simply use the nitrogen cycle to purify the water for your pond. Plants as we know, removes some nitrate from the pond water.  Filtration systems or pond filters are a necessary tool used in the caring of plants, water and fish in your pond.  The work of the pond filter is to control the nitrogen cycle in the pond. The nitrogen cycle takes fish produce which is very toxic and then oxidizes them into a positive nitrate. Technically, the plants will absorb then make use of the nitrate that’s left behind. They also add oxygen to the water in the pond too. If the conditions are kept the same, the process goes on indefinitely.  In a pond setting without a pond filtration system, the ammonia produced by the fish would accumulate until it has reached a toxic level which is dangerous to your environment.  If the pond is also overpopulated, there will also be a higher amount of ammonia.

Not all pond filters are built to have the same function or specification and the different filtration system will work better or worse for different styles of pond. In the next segment, we will take a closer look at some of the most important features you need to look out for that will best work for your pond and you.

Filtration Stages

 Every fish pond filter has two stages – mechanical filtration and biological filtration.  These two stages of filtration are known to be different when it comes to operation but they are both required and important ensuring your pond is kept neat.

Biological Filtration

Biological filtration in a type of situation that involves altering biological waste products like ammonia to keep the water chemistry at a safe level while also killing off microbes that is found in your pond.  Biological filtration stages makes use of a media substrate that is known to encourage the growth of beneficial microorganisms on the pond filter.  These microbes as well converts ammonia which the pond produces as waste into nitrates that then can be used by the plants in your pond. Maintaining a biological filter with beneficial bacteria all the time can lead to colonizing the substrates as well as the rocks which can be found in your pond via microbes that change ammonia.

Another stage of biological filtration involves ultraviolet light to kill of all unwanted microbes which involves bacteria and parasites that can spread diseases through your pond.

When the filtration system involves a UVlight system, know that the effectiveness of the UV requires that the water flowing into your pond doesn’t pass through the filtration system very quickly or the pond water doesn’t come out as “too silty” – the longer the water in your pond is exposed to UV light, the more effect it has during filtration.

Mechanical Filtration

Mechanical Filtration unlike Biological filtration is known to be much more easier but it is also required in the filtration process. This stage of filtration uses a filter to remove or drive out unwanted particles, algae and a big chunk of waste found in the pond.

Originally, Mechanical Filtration require multiple layers of mechanical filters which vary in shapes and sizes so that filtration can go on smoothly without any hassle.

Pond filter types

Best Koi Pond Filters and Pumps - Reviews & Guide

Generally, there are five types of pond filters available on the market.

  • In pond pre-filters
  • Skimmers
  • Pressure Filters
  • Waterfall filters
  • UV Sterilizers

Some of them have only mechanical or biological purification process. Some others have the combination of the two. So, as per your own requirement, you can choose the best one for you.

In Pond Pre-filters:

 It can be used for small ponds.  It does mainly mechanical filtration. Ponds with a heavy stock of fish should not be cleaned with such filters.

Skimmers:

 This can be used for ponds of any size.  It can do both mechanical and biological filtration of a pond. However, for a heavy amount of biological filtration you may need to add extra biological filtration kit with it. It helps to collect the bigger size debris on the surface of the pond.

Pressure Filters:

 It is best for medium or small size ponds.  This pond pump filter is a mechanical filter. It can be used along with skimmers. This kind of filter is capable of purifying small debris.

Waterfall filters:

This type of filter can be used for a pond of any size. However, it is best for medium and the small size of pond.  Biological filtration is done just the best with such filters. 

UV Sterilizers:

It can be used to clean the green water from medium and small size of ponds. It can also clean the waterborne bacteria and viruses.  If you have a pond with many fish, then this device can come extremely helpful. 

Benefits of a Pond filter

Best Koi Pond Filters and Pumps - Reviews & Guide

Pond filter system is mainly required for those ponds where you have kept fish, turtles or other water animals. It mainly helps in keeping the water of the pond clean so that the creatures you have kept in the pond can stay safe.

  • A pond filter adds beneficial bacteria into a pond. These bacteria destroy the invisible toxins in the water. These bacteria break down the Nitrite and Ammonia in the water. It transforms Nitrite into Nitrate. This nitrate can be absorbed by the plants in the pond. The environment of the pond is improved, and it is good for the fish you have kept in the pond.
  • The skimmers can help in cleaning the larger debris on the surface of the water. It collects such kind of debris and then helps it for the easy removal. So, this larger size debris doesn’t get a chance to sink down and become decomposed.
  • A pressure filter can help a lot to remove the green algae from water. It makes the water crystal clean that is just the best for the health of the fish inside the pond.
  • With the help of UV sterilizers, even the smallest particles inside the pond can be removed. Thus, the water will become crystal clear. The water will be so clear you can see fish inside the water. It increases the beauty of the pond.

Features of a pond filter

  • It will depend on different types of pond filters. UV pond filters have the UV sterilizers that have the ability to work down to the microscopic level by cleaning the invisible biological toxins of the water.
  • It can have adjustable fountain heads. Some of the pond water filters will also have the magnetic drive.
  • Bottom drainage feature can ensure the removal of the debris that falls to the deepest level of the pond. This feature will not allow the debris to be decomposed at that low level.
  • Most of the quality pond water filters will have easy maintenance features. The components of the pond filter can be easily removed. At the time, the installation should not take too much time. It will also help in cleaning the water filter easily.
  • Back-wash feature is also a crucial feature in the pond water filter. This feature will help in removing the collected debris from the pond easily.
  • Presence of mechanical sponges will help in purifying the small components present in the pond water.

FAQ

When to clean pond filter?
Pond filter needs to be cleaned very often. Biological filters needs to be cleaned every year during the spring or fall while mechanical pond filters on the other hand needs to be maintained on a weekly basis.
What pond filter do I need?
The standard required by professionals is that you should have a filter that is rated about 1.5 times the number of gallons found in your pump. So if you have a pond that contains about 400 gallons of water, 1.5 x 400 means that you need a filter that is rated at more than 600 gallons per hour. The flow rate of all pond filters is measured in gph.
What is pond filter media?
Pond filter media is the material found within the filters that your fish pond’s water is pumped through. As water passes through a pond filter media, the material removes unwanted algae and debris from your pond system. It can also act as a home or a sanctuary for bacterials in your pond.
Can a pond filter be too big?
Surprisingly, No. You can’t have a pond filter that is too big for your pond rather larger pond filters have more surface area and they do not require to be cleaned as much as smaller filters so that’s less work for you.
Which pond filter system is best?
For all the great options of pond filters on this list, our best pick is the Grech CPF-2500 Pond Bio Pressure Filter UVC 13-watt Up to 1600 Gallons. But inasmuch as that is the best choice on the list, the best pond filter system depends entirely on your specific needs.

Conclusion

If you are a lover of keeping fish and other water animals in your pond or water garden, then you need to ensure that the water of that pond remains safe and healthy. Using a pond water filter can provide you with the best quality water.

You should check the size of the pond, the volume of water to be purified, and the number of fish or other water animals to ensure you buy the best pond water filter.

By choosing the best Pond filter system, you will be able to keep the pond crystal clean. It will not only help you to keep the fish, turtles or other creatures healthy, but the visibility of the pond will make it much more beautiful. You will be able to see the fish playing in the water. Choose the best pond water filter that has both the features of mechanical and biological filtration.

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