I have had this 30-40 P colony of Pink Zippers in my tank for a good month+ and it's not happy. The first couple weeks were fine and now only a couple polyps are fully open on the right and the rest have there skirts rolled up. As you can see in the pic. All other z/p's in my tank are fully open and thriving. Do I need to frag this colony and see if they improve. I moved it around my tank to a couple other locations and nothing changed. It's been this wY for the past 2 weeks.
Yes I tried moving them higher and it didn't seem to help at the time. I moved them up again today to see if this helps. I believe this started when I changed out my stock LEDs to a Kessil 160, but this only had a positive effect on all my other Z/P's. Finicky Zoas.