My golfball coral has been going downhill for about a month now. I am not sure what is wrong. My levels are:
I think I might have a phosphate problem as I am getting this purple algae on my sand, but I have put in phosphate pads to absorb that (about a week ago).
I have good water flow, two anenomes and another coral which are all doing fine.
I have two lights (35W each), one blue, one white.
I have attached a picture. Anyone got any ideas?