Kinda Weird Q about Corals

[euphoria]

I didn't know how to title this thread, so bare w/ me.
I was wondering if corals get tired of staying open after certain hours of the day and close down, EVEN if the lights are all still on.?
I ask this, cuz my lights are usually on 9 hours a day, and during the final hour or so, I notice the corals start to get smaller and slowly, very slowly, close down. Is it cuz they got enough light and don't need to stay open, or what?

 

[montidanae]

mine do that too, at the same time veryday, only my lether and frogspawn though, everything else is open the whole time, usualy, nothing bad happening to me.

 

[dburr]

My personal opinoin on that is this, if your tank is on timers, the corals know when they will turn on and off. It's almost like they have a brain.:thinking: I have a lobophylia, and it feeds just before lights go out and stays like that all night.

 

[euphoria]

I have timers set, and they are used to the schedule, but a few of them start closing maybe half to one hour before lights go off.

 

[caryn_ia]

My leather does this almost everyday, 45 mins before the MH go off. I agree that with them being on timers, they pick up the routine, and start closing up. I have heard this is common for leathers. Sometimes my zoos do it too.