Who Gives A Fish Forums

Hi and welcome to the forum.

I think a picture of the foam would really help us figure out what's going on. If your camera's resolution is too high, try lowering it to take some smaller pics that'll fit on this site. Then just pick a couple of clear ones that show the problem and post them here ...

Foam started showing up after the filter was unplugged and then plugged back in again. I cleaned the filter, thinking that might be the issue, but that didn't work. So I went ahead and changed it. The foam disappeared when I changed the water, but it came back a day later. I've noticed that when the ...