My sister put the Lego into the tank and I'm not sure whether she's treated it in anyway but as far as I'm aware Lego's non-toxic so could it still have created such a problem? =/
Have you seen the catfish picture (there's a link at the bottom of the post) do you think the two fishes conditions...
Okay, so I've got an aquarium with loads of bristlenose catfish in and a few other small fish. I recently was given some angel fish but gave them away as they were nipping all of my other fish. The bristlenose and another fish (which I'm slightly embarrassed to say I don't know the name of) have...