Ahhh I guess I was completely wrong, I thought it was a sponge filter
if he's happy then we're all happy :) my fish buddies are doing great, my boy I just got from Thailand has fully recovered from hat ever was bothering him when he came in, he's happily swimming all around. Still dealing with some rips in my boys fins from the stupid divider I have in. It has rough edges. I'm gonna go look for some foam that would let water flow through and use that. If not.... Time to set up my 4th tank.... F it.