So i bought a Bleeding Apple Scolymia for my birthday(Jan 31) I got it and it looked pretty good. Being in my tank it slowly just started receding and showing more skeleton. I'm thinking it was due to having high PO4 in my system. I took the Scoly to my local LFS to see if they could nurse it back to health while I try and get my Phosphates under control. I've been carbon dosing for months now and it's only dropped my NO3. I think I just have so much PO4 bound up in my rocks and sand. So I started using GFO about a week ago(2/23). It does lower PO4 temporarily then it goes back up. I been keeping at it changing it every day. I'm going to LFS today to see if my Scoly has shown any improvement.