Temp swing

[Duberz]

Is a temp swing from 79 to 73 bad? My tank usually runs 78-79. Here in Florida we got into the upper 30’s last night and my tank went to 73. I’ve never had a heater so I’m concerned. Everything is doing awesome right now so I think that swing isn’t too bad but want to make sure. Thanks

 

[Larry L]

I wouldn't worry about it, especially if everything is looking ok. My tank recently had a drop to 68 (return pump failure with heaters in the sump) and never showed any issues: https://www.reef2reef.com/threads/arctic-blast-hits-my-tank-68-f-o_o.771242/

 

[JumboShrimp]

Similar story from here in Florida, the tank temperature in my FOWLR dropped last night to about 72 when the unusual 39 degree nighttime cold hit; my French Angel kind of hunkered near a rock and and powerhead (warmer in the flow?) and didn't feel like eating, but is fine today.