I thought I figured out why I was having trouble with this guy but it appears I am losing a second polyp. Parameters Mag: 1200 Alk: 9.1 Cal: 400 PO4: .02 Salinity: 35 ppt About 6 weeks ago I used a bit too much GFO and caused the corals to start bleaching a little. Once I noticed this I pulled the GFO and stopped using it. Now that I no longer have fish in the tank so I haven't been using GFO at all. I am using chaeto in the fuge for nutrient export. The top most polyp on the frogspawn slowly recessed and died over a 3-4 week span. Now another polyp is starting to show the same signs. I am trying to intervene before I lose another polyp. I have had this coral for roughly 6 months and this is the first time it's health has been getting worse. The flow is low to moderate. I use a wave maker and the polyps gently rock back and forth. I expect the PAR on the coral is approximately 200-300 maybe more I don't have a meter. What do you guys think it could be? I am planning on moving it down to the sand bed for now unless that would be counter productive if it's needing more light. Thanks for the help guys! Other corals in the tank seem to be doing well, acans, torch, hammer.