I have had this Galaxea for 3 months, but over the past 2 weeks, it has gone downhill, partial opening and visible stalks. I target feed mysis or oyster once a week
lighting 5 T5, 3 actinic, 2 white
2 Tunze pumps
I change 20 gallons weekly. Other corals, leathers, frogspawn, zoanthid, bubble coral, feather dusters, all ok. I have 2 clownfish, a diamond watch goby, and Midas Blenny. the Galaxea is 3/4 up and not near anything else. any advice? Thank you!