Temp. fluctuation

[Tava176]

I like to leave my windows open at night (for fresh air). My tank will drop from 81(11pm) to 78 (8am) over a 9 hour period and then back up to 81(2pm) by mid afternoon. Is this ok? Too much of a fluctuation for my fish and corals? So far everything seems fine. It is that strange time of year in Buffalo, NY when it is 75 in the day and 60 at night outside.....

Thanks!

[Eugene Ciccimaro]

I live in philly and have the same flux. It's been fine for me for 2 yrs now.

[frederickk]

My tank drops from 81 to 78 each night and everything is alright.

[Tava176]

Cool. Thanks for the reassurance all!

[Amphiprion]

A 3-4 degree fluctuation will not harm anything.