Bio-Active Pressure Filters with UV Clarifier

TetraPond Bio-Active Pond Pressure Filter with UV Clarifier
  • TetraPond Bio-Active Pond Pressure Filter with UV Clarifier
  • Bio Active Pond Pressure Filters with UV Clarifier
  • Bio Active Pond Pressure Filter 4000 with UV Clarifier
Product No. 26566
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Bio-Active Pressure Filters provide mechanical and biological filtration to help maintain clear and healthy pond water. Its unique open profile bio-activators provide large surface area and unrestriced water flow to all surfaces for improved cleaning. It is designed with an easy, backflush valve for fast cleaning. This filter also integrates an Ultra-Violet Clarifier that provides permanent control of suspended algae which cause green water. Includes a 2 year limited warranty (excludes bulbs). 9 foot power cord.

Mechanical Filtration
Pond water flows down through the bio-activators which remove suspended debris and dirt from the water.

UV Clarifier
Each Bio-Active Clarifier comes complete with a UV Clarifier Bulb. The UV clarifier works by exposing single-celled algae to very high levels of Ultra Violet light as the pond water containing them is pumped through the clarifier. The water containing single-celled algae comes in close contact with the light from the UV bulb that is protected from the water by a quartz glass sleeve. The Ultra Violet radiation disrupts the algae’s ability to reproduce. The algae die and clump together; at which point they are easily removed by the bio-activators inside the pressure filter.

Biological Filtration
Biological Filtration occurs on the massive surface areas found in the bio-activators. Beneficial bacteria will naturally colonize on the surface area and convert harmful pollutants in the water into relatively harmless nitrates, which are absorbed by the aquatic plants and removed by partial water changes. This is known as the “Nitrogen Cycle”.

Bio-Active Pressure Filters come equipped with bio-activators which offer superior filtration and back flush performance over foam. In normal filtration operation, these bio-activators easily trap dirt and debris from your pond and because of their shape they provide a large active surface area for the beneficial bacteria to colonize for upgraded biological filtration. During the back flush operation, bio-activators provide unrestricted water flow to all the surfaces so that dirt and debris are thoroughly removed while leaving the beneficial bacteria on the bio-activator surfaces intact and robust.

This product comes in the following sizes:
UV1 - 1500 gal/9 watts
UV2 - 2500 gal/18 watts
UV3 - 4000 gal/18 watts
Bio-Active Pressure Filter With UV Clarifier is rated 5.0 out of 5 by 5.
Rated 5 out of 5 by from Tetrapond 4500 bio pressure filter w/ 1900gpm pump Best set-up running problem free for years. Very easy to get parts. Keeps my heavily stocked 2000 gallon koi pond clear year round. I also use a tetra pond 2500 inline UV sterlizer. Replace bulb every second year.
Date published: 2017-05-15
Rated 5 out of 5 by from They stand by their warranty After a year of great performance, my pond began to green. I figured it was time to replace the UV bulb - normal use is 1 year - but when I opened it up, I found that the power block was cracked. I called customer care to buy a replacement. Instead, they looked me up by my address, told me the filter was still under warranty, and shipped me a new one at zero charge. I didn't need to find my receipt or anything - I just needed to ship the old filter head back to them. That's the kind of customer service that causes me to recommend TetraPond to my friends.
Date published: 2016-05-10
Rated 5 out of 5 by from Excellent Quality After reading reviews on this product I purchased the Pressure BP 1500 model with UV late April of 2016. I was really fed up with prior sponge filters and the work cleaning them. Two things I noted right away. One, the filter was really heavy duty plastic and solidly built. No flimsy parts. Two, the step by step instructions were clear and easy to follow. The instructions also had a help number to call if needed.It's early days yet but I am starting to see improvement in my pond water. Tetra has a good reputation and product quality is important.
Date published: 2016-05-05
Rated 5 out of 5 by from Easy to use I bought the BP 2500 UV two years ago and have found it to be an excellent filter, but what I find even better is Tetra's customer service! The housing for my filter split the winter and I contacted the company to see if I could purchase a new housing rather than buying a whole new unit. Linda at Tetra Pond was most accommodating! I am so pleased. I have used Tetra products for ever, starting with aquarium products when I was a kid and now in my pond. Love this company and their products. Love that they stand behind their products and look out for their customers.
Date published: 2016-04-29
Rated 5 out of 5 by from Absolutley the best filter I've ever owned I purchased a BP1500UV filter with the 3500 pump in August of 2010. This is the 2nd season that it is in service. Prior to this system I had a foam filter sytem and I had to change filters everyday. I almost gave up on my pond because the work, but then I discovered the Tetra filter system that does'nt need filters. My pond water is always crystal clear without ever the use of chemicals. All that is required is backflushing once or twice a week, and this takes about 5 minutes with no mess at all. This is a great filter and I highly reccomend it. I also use the 3500 gal. pump which was reccomended and the water flow is excellent.I also sold my friend on this system and he is very satisfied with his.
Date published: 2012-03-27
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Where can I purchase the latches that hold the filter's lid in place?

Asked by: TriniJoel
Thank you for asking! You can get a latch as part of the spare part kit for this filter. For more help please call Tetra at 1-800-526-0650.
Answered by: Tetra Expert
Date published: 2018-05-16

hi can you email me an owners manual i lost mine

Asked by: aryd
We are happy to send them to you. The email with the instructions has been set. For more help call Tetra at 1-800-526-0650. We are happy to help!
Answered by: Tetra Expert
Date published: 2018-05-16

Have 4 yr old 1500 bio filter n after changing uv light last year it leaks water n does not filter. I checked casket n does not stop leak. last yr noticed filter didn’t clean well n waterfall filter picked up so much. what’s next. New filter?

Asked by: Pat47
That really depends. You checked the gasket, but did you replace it? Most likely it needs replacing. Another possibility could be the clamps are worn out. In that case you would need a new filter, yes. There is also a backflush o ring that may need replacing. Unfortunately, unless you can find someone online who has the repair kits in stock, you will need a new filter. BREX
Answered by: BREX
Date published: 2018-05-10

Can the bio-active pressure filter run year round / during freezing weather?

Asked by: Landy
No, it needs to be brought indoors for the winter. Biological filtration does not occur in the winter time anyway, as all of the bacteria simply die off. BREX
Answered by: BREX
Date published: 2018-05-09

We just hooked up our new 1500 model. It ran for 2 weeks. I took the cap off it to backwash and water came pouring out. I quick put the cap on. It was still set to pond not clean.

Asked by: Lin d
If you are referring to the port cap, water will indeed come out if the cap is off, hence the reason for the cap. This is normal, and not to worry, but be sure to turn the valve to clean first, next time. BREX
Answered by: BREX
Date published: 2018-05-09

Is there a basic installation manual I can download? I misplaced the O ring on my BP2500 and have just gotten a replacement - but can't seem to get the filter lid to snap down tightly now. Not sure if I'm doing something wrong or not. Any help please..

Asked by: DaveCa
Not on the site, no, so we'll email one directly to you. BREX
Answered by: BREX
Date published: 2018-05-02

Hello, I have this filter system and I love it. Unfortunately, the bottom of the housing cracked. Can I buy that piece separately?

Asked by: pond princess
Actually, no, it is discontinued. However, call our Care Team at 1-800-526-0650 to see if we still have some in stock that we can send out at no charge. BREX
Answered by: BREX
Date published: 2018-05-01


Asked by: pegt
Potentially, yes, other than you need the pump to operate the filter. We would need more information on the size of the filter tanks and amount of media. The BP does not contain mechanical media so it won't replace the pads, either. Also, when changing filter systems you want to operate the new one with the old one, simultaneously for a few weeks to avoid a crash of the system. BREX
Answered by: BREX
Date published: 2018-04-26
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Bio-Active Pressure Filter Guide


Pond Size


BP1500 UV

Up to 1500 gallons  9-watt Clarifier

BP2500 UV

Up to 2500 gallons

 18-watt Clarifier

BP4000 UV

Up to 4000 gallons

 18-watt Clarifier