What's the lowest temperature corals will survive?

[pvh]

Since winter is coming I was wondering what's the lowest temperature you have had your tank at without killing any corals?

 

[MichaelJ]

Since winter is coming I was wondering what's the lowest temperature you have had your tank at without killing any corals?

Mine has hit 72.6.... It was a cold morning and we left the windows open no heater.

 

[RayD]

You'd be surprised how resilient corals can be.

 

[penguinsix]

I seen some sit out in a coldish (68-70) degree garage for 2 days and nights and have stuff still be alive. They were in water of course.