AQUANEAT Aquarium Bio Sponge Filter Media Pad Open Cell Foam Cut-to-fit Matten Filter Fish Tank Sump Divider 17.7" x 17" x 2"

This filter sponge was used in the H.O. B. filter for my fresh water aquarium and in my canister filter for my saltwater aquarium. In both the water is clearer. It's easy to use and easy to be cut for different applications. Good product with a good price.

Smelled like chemicals, but cut to pieces and cleaned and It works great in my tank. Fyi it's a whole lot.

It's stiff enough to push between two walls to keep fry from getting to filter, tight enough to keep fry from getting trough or stuck, but porus enough for the filter on the other side to keep the tank clean.

Seems like it's going to work for what I got it for which is mechanical filtration for a fish tank.

Is and does exactly as you'd expect.Besides using as replacement for single use filter cartridges, I used a sizable piece as a prefilter covering the pick up tube on my HOB filter.This:• reduced the maintenance on the HOB filter• increased bio surface area immensely• protected small fish from getting sucked against the pickup tube so now I can run filter at full volume• captured food particles onto surface of material that normally would have been pulled into HOB internal filter and now fish can find and graze on throughout the day.Saved food, maintenance, better filtration. No brainer.

Used to hot rod my HOB filter. Great value and arrived quickly.

It's ok. I wish it was coarser. Clogs quicker than expected.

Came fast and is just as described. Easy to cut into different shapes n sizes if using it to replace original sponge filter media or creating your own.Highly recommended.