Tnops
Well-Known Member
Hello, after installing 2 powerheads into my tank, I've noticed that my firefish's dorsal fin was down. Basically flat on it's back instead of looking like an antenna. Today, when I turned off the powerheads for maintenance, it's dorsal fin came back up again. It's behavior is otherwise fine other than maybe hiding from the flow a bit. Both powerheads are Jebao OW-40 wavemakers that I got from Amazon. My tank is 75 gallons and the powerheads are already on their weakest settings. What should I do?
