BioFoam and Grid Whisper 20i 40i

Easily find Whisper® filter parts with Tetra online, including the Bio-Foam® and grid for our Whisper® 20i and 40i.
Product No. 25997-00


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BioFoam & Grid for the Whisper 20i and 40i
BioFoam and Grid Whisper 20i 40i is rated 5.0 out of 5 by 1.
Rated 5 out of 5 by from Good replacement I bought this biofoam to replacement the one in the Repto-filter and it works great. Definitely will buy it again
Date published: 2015-08-14
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Will this fit the large filter?

Asked by: Amers
This fits both the 20i and the 40i. I am not sure which filter you are referring to by "large filter". The 40i is our largest internal filter, however. BREX
Answered by: BREX
Date published: 2017-03-27

Would you please give me the dimensions of the biofoam and grids for the internal 20-40i, 20, 30, 40 and 60? Thank you!

Asked by: Cmerrell
The 20-40i bio grid is ~ 6.25x 4.5 x 0.5” The 20, 30, and 40 reticulated foam is ~ 3.75 x 5.75 x 0.6” The Whisper 60 has two foam pads. the same size as the 20, 30, and 40. BREX
Answered by: BREX
Date published: 2016-06-14

How often should the bio foam grid be rep!aced and can the foam part only be replaced?

Asked by: Milla
Only when it is falling apart basically, so pretty rarely, and no, it only comes with the grid as well. BREX
Answered by: BREX
Date published: 2016-06-03
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