so I introduced my first zoa frag from a local store and was given 1 more by a local club member 4 and 3 weeks ago. they just look they are melting away day by day. 3 weeks ago I was given a green rhodactis frag as well by a different club member and that has already disintegrated so much one day there was nothing on the frag rock. I don't want to get any more over fear that I am just killing them. My tank is a 38 gallon with 20 lbs. black Hawaii live sand and 3 lbs. of live rock from LFS and 26 lbs. of dry rock from LFS. Tank has been up since June 1st and had a major nitrate spike up to 100 PPM a few weeks ago after adding the live rock since I didn't know I needed to clean it or anything like that. got that under control now. there are 4 fish, 3 hermits, and 3 small snails in there currently. I am running 2 30" T5 non HO. 1 is blue the other is white for 8 hours a day 2 hours in the morning and 6 hours in the afternoon/evening then the HOB fuge light turns on for 8 hours over night. I have a HOB skimmer and a HOB filter that has Chemi-pure elite in it for phosphate and nitrate control as there is no room for a sump and HOB is more familiar to me. Been getting my RODI and saltwater at LFS weekly for top offs and weekly 5 gallon water change. PH is at 7.8, salinity is at 1.025, alkalinity is at 9.5, calcium is at 562, phosphate is .38, nitrate is at 12.8.will add pictures of how bad they look later on but any ideas what I have been doing wrong? feel free to ask any questions that I didn't think to answer already