I don't have any pics right now, but it appears that 4 of the 5 corals i clipped (less than 1/4") are dying. One is OK, but i lost the blue tips on that one. I wish I hadn't read this post,
slow growth was better than the corals dying. I'm sure there's something else to it, but I don't know what. My param's are good - sal=1.025, calcium=440, alk=11, mag=1260, nitrates=0. (all Salifert test kits). I do 10 gl water changes weekly, and i clean the rocks w/ a turkey baster before every change. 75 gl tank w/ 30 gl sump, 6 x 54 Tek t5's, about 45x flow from powerheads and a sea swirl. This tank set up 16 months.