Medium Pre Filter Sponge

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This is a coarse pre filter sponge for filter intakes. This bridges the gap between the small and large sponge filters. Working best on most mid sized hang on back filters. Half inch hole for filter intake. Can stretch a bit if needed. Our pre filter sponges are closed on one end to prevent fry from being sucked up.

Intake hole: 1/2 inch

Diameter: 2 1/2 inch

Length: 3 inches

Customer Reviews

Based on 290 reviews
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(276)
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M
M.S.
It Was A Little Surprising

I had ordered the large sponge and found it was a little too big for my HOB. Having watched ACo-op do all kind of cutting gave me the confidence to fix that issue. I went ahead and ordered the medium for the future and found the size difference was much greater than I thought it would be, especially since I know there is a small size. The Medium is a lot smaller than the Large, which leads me to believe the Small is tiny.

The sponge itself is great, well designed and well made. I just hope the Medium will not be too small for my HOB when the time comes.

P
P.N.
Intake sponge

It fits perfectly. So glad that I could add this to my 10 gallon tank. None of my local stores had it.

M
M.P.

Awesome product.

K
K.R.

Excellent service and communication!

C
C.L.
Simple, doesn't clog, safe for my baby cherry shrimp

Title says it all, I tested it for a while, my main concern was that maybe baby cherry shrimp could get trapped in it but they are perfectly fine. I like that it is covered on the bottom part as well.