ALEGI Bio Sponge Filter Foam Cut to Fit Media 9.5"x3.5"x3.5", Replacement Insert Compatible to AC 110

This sponge was exactly what I needed. My Tidal35 water tank filter doesn’t have a typical suction tube like other filter so I couldn’t buy standard ready to use sponge filter to cover the suction from potentially sucking my fish or shrimp. I purchase this sponge, carved it out to fit my filter and it work wonderfully. I now don’t have to worry about my fish or shrimp getting sucked in. It’s the perfect fit for my filter and I got more value than what I spent on it.PRO: Affordable, easy to cut, doesn’t slow water down from going into the filter.CON: Only one chance to cut it correctly.

Perfect exactly what I needed for my pre filter

Funciona

I believe these are meant for aquariums. I use these as a filter in my cat's water fountain. For that purpose, these work great. I just cut the sponge down to size and does a great job catching any furs and filtering the water. Just one pack of these will last me several months, so good value. I cannot attest to how these work in an aquarium setting, but should work similarly well.

Worked great for intake sponges on Fluval 207 and 407. I thought I'd make 3 skinny blocks but ended up cutting it in half and making 2. They're pretty big in the tank but I think will do a better job filtering with thicker walls. Rounded one corner with a serrated bread knife (don't tell my wife, but it did work GREAT) and they sit in the bottom corner of each tank. I left the cage on the intake tube sobthe little ball can still prevent backflow. (Aquarium Coop's videos show it taken off, I just didn't want to lose that function.) Don't overthink the size of the hole you'll need, just buy an uncut block like this and hack at it till the intake fits in. Cheap AND easy. Oh, and it did re-inflate just fine.

I use this as the first filter foam layer in my FijiCube all in one sump. It has a relatively coarse pore size, but does a nice job filtering. Although it needs to be cut to the thickness you want, the square dimension is the perfect size to fit into the first chamber of my sump. I have this sitting on top of my Fijicube 10 gallon sump media basket, and it is a nice mechanical filtration element.

Love how big it is. I needed something to make my fountains bottom basin more quiet. It was just too loud for my condo, stuffed this in there and it worked perfectly!

This is not your standard Aquaclear foam... It ships compressed and is not ready for immediate use. I kept it and I am proceeding to test it vs OEM and traditional Aquaclear compatible medias, we will see.