Lights stayed on all night... Effect on coral?

[ner'T']

Hi,

My 250MH failed turn off at 10pm and stayed on all night. Does anyone have any experience with how this effects the corals?

I have a mixed reef.

[paddyob]

its one night.

i have occasionally failed to hit the lights and my coral has just done its regular cycle and started closing anyways.

[Lance]

They're fine: other than they may be yawning a little this morning.

[dsaundry]

Party corals

[Delphinus]

Corals will be fine, IME it's fish you need to worry about, if they don't go to sleep with the lights on (some don't care, but some might) they can get a little woozy. If you notice anything just give them a lights-off period for a bit. At least that's what I'd do.