i have a 20 gallon high with two 24" striplights... one 18" bulb Power-Glo and one 18" Marine-Glo. i have about 60 lbs live rock and a whisper 30 power filter. tank has just finished its cycle about two weeks ago. so far i have one gold molly (will soon be moving out), one purple firefish, one haitian (sp?) anemone, one anemone crab and a banded coral shrimp. i added them slowly, testing daily for ammonia, nitrite, salinity, etc. im gonna leave it at that for a couple more weeks. if all goes well i wanna add some more shrimp, crabs, snails, mushrooms, more anemones, etc. probably no more fish. how many crabs, shrimps, anemones, snails, etc can i have in this tank? any input is greatly appreciated.