What do you guys think 75 gallon reef running on 160 Watt LED Fixture. 20 gallon sump. 70 lbs of rock. Lot of Coral. Fish: White Bristle-tooth Tang, Yellow Tang, Blue Hippo Tang(Holding for friend while he upgrades), Coral Beauty, 2" copper-banded butterfly, 2 ocellaris clowns, orchid dottyback...