After about 1 1/2 mths..Stuff in tank was added slowly not all at once. After about 3 weeks I added my first soft coral.."Leather toadstool". During the cycling stages had a few casualties involving a couple of fish.Was affected by a batch I bought due to cynaide poisoning . ..Anyways, my tank has been running smoothly since then..I removed the coral chips in my sump due to many ppl asying that it'll become a "nitrate factory" and also cause it was accumulating lots of detritus.