Submersible Flat Box Filter

TetraPond submersible clog-free pond filter
Product No. 26592
Find a Store In Stock
Keeps ponds clean and prevents pump and fountain heads from clogging. Includes a flat filter box with filter-to-hose fitting, coarse and fine foam pads, 1" tubing, and three fittings for attaching hose to various pump inlets. Fits a wide variety of pumps, 200 to 2000 GPH. 1-year limited warranty.
Submersible Flat Box Filter is rated 5.0 out of 5 by 2.
Rated 5 out of 5 by from Great Filter and Roomy Box I bought this filter and attached it to my Tetra 500g pump. It comes with two large sponges to hold nitrifying bacteria and keep your pond free of ammonia and nitrites. There is a nice amount of room under the sponges that I put in a pound of Seachem Matrix. This keeps my nitrates at about 10ppm and from rising further.
Date published: 2016-08-21
Rated 5 out of 5 by from excellent product.....I have an outdoor in ground pond just what I thought I needed....I no longer have to clean pump daily and can go on vacation without finding someone to clean pump.
Date published: 2015-08-28
  • y_2017, m_11, d_22, h_8
  • bvseo_bulk, prod_bvrr, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_2
  • loc_en_US, sid_26592, prod, sort_[SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_tetrafish

The filter box floats even when held under water, filled with water manually and rotated for bubbles to release. Why is it floating and how do you fix this? Is the water supposed to pump out of the box or is that water supposed to be sucked into the box?

Asked by: Dmariesweet
The pump should be installed so that it is pulling water through the box. The water is drawn into the top of the filter box, through the media, then through the hose, and into the pump where it shoots out through the top of the pump. Once the filter is filled with water and water is being drawn through, it should not float. However, you can also add pea gravel or lava rock to the filter bottom to provide more biological media as well as weight. BREX
Answered by: BREX
Date published: 2017-08-16

Generally, how is the best way to clean this unit and how often? I assume it is best disconnected from the pump and then lifted outside the pond to avoid spilling the dirty water back into the pond.

Asked by: Matter1960
Yes, unplug the pump and then disconnect it from the filter first. Cleaning should be whenever the flow rate from the pump slows down. Once it is out of the water, remove the pads and thoroughly rinse them and the bio media you purchased separately. BREX
Answered by: BREX
Date published: 2017-08-15

Do I need to have a Tetra pump with the filter? I have a creekstone and they don’t connect. 

Asked by: Ducky1479
You need to have a pump of some sort with it, yes, although it does not have to be a Tetra one, as long as it is sized correctly. BREX
Answered by: BREX
Date published: 2017-08-15

My filter box floats then makes the pump move and fountain stem tip over. How do I keep it from floating? I have 3 small rocks on top of it which cover the filter which is not good. 

Asked by: Tunsis1
Hold it under the water until it fills up with water and all of the air is purged, just like a glass. BREX
Answered by: BREX
Date published: 2017-08-15

What is the hose for

Asked by: Michael12345
So you can connect the filter to your pump. BREX
Answered by: BREX
Date published: 2017-07-17

How do you hook it up to the pump?

Asked by: John W
Hi John! There are several hose fittings that allow you to connect the flat box filter and the pump. Each kit comes with a filter-to-hose fitting ( 1 inch thread with 1 inch hose barb) and several pump-to-hose fittings (3/4 in. male thread with 1 in. hose barb, 1 in male thread with 1 in. hose barb, and 1-1/4 in. male thread with 1 in hose barb). I hope this helps you!
Answered by: Tetra Expert
Date published: 2017-07-13

When putting in the foams, which one goes in first - closest to the bottom and which goes on top - just under the cover? The green one has cutouts and is more dense and the black one is more coarse.  Thank you.n

Asked by: Loark
Good morning, Thank you for your inquiry. When you are placing the filter pads inside of the housing, you would want the black pad to go first (would then be on the bottom half) and the blue on top of it closer to the lid. MINI
Answered by: Mini
Date published: 2016-09-09

What pump can I get with this filter, that I've already purchased from Amazon. I don't see a pump sold seperatly.

Asked by: Adam K
Our Water Garden Pumps work with this filter. You can use any of them from the WGP 325 to the WGP 1900. BREX
Answered by: BREX
Date published: 2016-05-20
  • y_2017, m_11, d_22, h_8CST
  • bvseo_bulk, prod_bvqa, vn_bulk_2.0.3
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_16
  • loc_en_US, sid_26592, prod, sort_[SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_tetrafish