Few corals havin problems

[eidillitih]

My open brain, Lobo and two blasto are all not opening up like normal. It happen a couple of days ago, sps are doing fine. Been around a good while and this one has me puzzled. What do you think?

[karlmarx]

water params?

[Agu]

Obviously check water params first.

Has there been a change in flow or lighting? Have you added any livestock that might be irritating those corals ?

If none of the above are implicated I do a large water change and add carbon to the system. (but a large water change for me is 3 gallons ;) )