Help, had these zoas for 2 weeks now and they open in the morning fully but then close for the rest of the day.
I have checked my water parameters and everything is bang on. Initially I thought they weren't getting enough light so increased it but no change. Now I've reduced the light further and still not opening. The flow I have is an indirect low/medium flow
I can't see any pests or hitchikers on them either
Anyone got any advice?