Normal for all corals?

[Kizzy911]

I notice that corals often shrivel up at night. Im sure this is normal but is it usually like that? I turn the lights on in the morning and theyre all shrivelled up but it takes some time for them to open up again when the morning lights are on.

 

[A1t2o]

Yeah that's normal. They have day and night cycles. Some will open up at night and try to grab food.

 

[schryvertime]

That is typical. Most softies and LPS corals close up at night. Sometimes they might even close up during the day If anything bothers them like crab or shrimp.

 

[Kizzy911]

Sounds good. And it takes them like 20-30 mins to open up again correct?

 

[schryvertime]

Sounds good. And it takes them like 20-30 mins to open up again correct?

Yup. Nothing to worry about.

 

[DubiousMaximus]

Yup, normal. The first peak of light along the reefs is extremely blue, imo its why attinic lights are always recommended before daylight spectrum. Its like standing in the morning sun on a bitter cold morning camping...jus aint gonna do s### till your warmed up ('',)

 

[midieval10]

All normal

 

[Cparcaut]

I would read up on the daily cycle of corals, specifically the species you own. Many corals have a day/night cycle that includes retreating at night, and blossoming when exposed to light.