New reefer in ND

75 gallon DP, 20 gallon sump, 3" sand bed from hardware store sand, ~120lbs live rock, main pump is a Hydor 740, 2 Koralai 1050-1150 circulation pumps, AquaticLife T5HO 6-bulb, ReefKeeper Lite, Coralife RO-DI water