These mini pre filter sponges are great for small hang on back filters or very small power heads. This is a custom design we had made with a more coarse foam so it doesn't clog up instantly on filters. 

Intake hole: 0.5 an inch. 

Diameter: 1.25 inch

Length: 2.75 inch

Mini Pre Filter Sponge Coarse

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These mini pre filter sponges are great for small hang on back filters or very small power heads. This is a custom design we had made with a more coarse foam so it doesn't clog up instantly on filters. 

Intake hole: 0.5 an inch. 

Diameter: 1.25 inch

Length: 2.75 inch

Customer Reviews

Based on 79 reviews
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B
B.B.
good idea

It works well on the intake of a filter, keeping your main filter cleaner longer and preventing any small fish from getting sucked up into the filter. You may have to use a bit of tubing to get it to fit okay.

C
C.d.
Its a sponge

it fits pretty loosely on my aquaclear50. It falls off during water changes if I bump it

S
S.H.
Great Little Sponge

I ordered a small pre-filter sponge. It is wonderful. I have several canister and power filters that it works perfectly on. Fits great. I will probably order more over time.