Hi all. I'm having a problem with my zoos not opening. I think the problem is because I have quite a bit of hair algae in the tank for some reason. I have just started a treatment of algaefix which I hope is going to fix it. I'm not sure by I have the algae as I have 0 nitrates and phosphates. I do water changes often and even use a phosphate pad in my filter. This is kind of a last resort it get rid of it.
My other corals are fully open and thriving but my zoos just seem a bit sad. They also seem to have a fluffy collar around them which I think might be annoying a them and keeping them closed.
Any idea what this is or how to fix my zoos?