You should not turn off the pumps at night either. When in the dark algaes produce CO2
instead of O2
. You are risking pH problems and possible acidosis with the fish. RR might be right on the moving but I don't think 320 GPH
in a 30 gal
tank is all that high unless the coral is close to the outport of the powerhead. I would instead look at this as a possible light issue. Although 2x65w PC
on a 30 is not a large amount of light, if the bubble is higher up in the tank, they will respond poorly. I would agree on the moving but also place it lower in the tank while your looking for a low flow spot. Preferabley near/on the substrate.