The reason is because all my corals that were either half dead or bleached are all looking good. Coloring up with polyps out. I've been doing water changes like crazy as well as reducing bioload, siphoning out all detritus and i ordered a oceanrunner pump which puts out twice as much as the sedra i have on there now so more effecient skimming. My levels of calcium/alk/magnesium have all stabalized. The reason the corals RTN'd in the first place is because the new reactor made the levels go from below average to above average almost overnight. Believe ma, the last thing i want to do is have another mishap but i appreciate yor concern. This is why i like this website. I get so much help here! It's great. FWIW, i performed a 30% water change yesterday and my nitrate levels are much lower. So, lower nitrates, stable parameters and everthing looking better than ever, i decided to add some corals. HTH