freefour
Aquarium Advice Apprentice
I was doing my weekly pwc and was vacuuming the betta tank . Turned up some of the gravel and a black goop got sucked up , and smelled terrible , stunk the den up really bad. Well I got done and a lot of the gravel in the middle of the tank is black stained now. I was going to change out the substate to sand but now I'm kinda worried about this stuff. I had read something about this some ware in here or on the web but for the live of me I can't find any pictures to confirm. What I had noticed is that it was like a black slime and it was under the gravel. Not hairy , from what I could tell and it's not on any thing above the substrate. I also had a problem with diatoms but they have subsided a lot and I didn't pull much if any this time. Any suggestions?