I have a 75 gal tank (startup3/1/06), 100 lb rock, (2) 150W HQ,(2)96W actinic,3 powerheads and a Seio 820, 7 small fish, 15 hermits, 6 astreas, SPS (all in the upper part of the water column),LPS, soft corals, sponges,fanworms, & macro algae. A 15 gal mud refugium on a reverse cycle,96W VHO and...