Who Gives A Fish Forums

Hey guys,
My Bowerbanki colony is dealing with some skin recession on one side and I'm stumped. I've got a 75g mixed reef DT with no coral-nipping fish or crabs. My parameters are all in check - 2ppm nitrates, 0 ammonia, 0 nitrites, 420 Ca, 1360 mg, 8.2 DKH, 1.026 SG. I built my own LED lights and ...