Thanks for the quick response. The tank’s only on day 7 of the cycle so I'm not surprised that he’s not happy.
Tested the water : (Temp - 80 F, SG - 1.023, Ammonia – 0, Nitrite – 0 Nitrate - 5-10 ppm) so nothing looks too off.
Hmmm. I watched it for a good 20 minutes. It really looked like it...