thanks for the speedy replies,
first off, its a 60 gallon reef tank with 20 gallon sump under, 1 rio 2100 pump and 2 rio 400 powerheads, with a bunch of bio balls, 15 lbs of Fiji live rock, 3 damsels, (2 black white 1 blue) 1 California Sting ray about 4 inches across 6 inches from tip to tip...