Temp level, what is too high?

[Dub]

My Reefer 170 mixed tank is at 81.7 - 82.5 according to my Apex. Fish and softies seem to be doing well. Several attempts at sps not so well. All other parameters are steady at accepted levels. Do I need to cool the tank? Thanks for any replies.

 

[ScubaFish802]

82.5 is definitely approaching the high end. I don’t have a lot of knowledge on sps so hopefully someone will..
Bump

 

[Twoddler]

Keep mine around 76.5 and alls well

 

[Flippers4pups]

Temp probes are often not accurate, especially if the probe hasn’t been calibrated in some time. Verify your tanks temp with another thermometer.

I run my temp at 80 degrees consistently with no issues. I verify my temp with a fluke thermometer.

 

[wonroc]

78-79

 

[ReefHomieJon]

I do 77. That way Temp can fluctuate a little up or down and be ok

 

[PatW]

I scuba dive. Caribbean reefs often hit 84 degrees during the summer without apparent ill effects. They even get higher and do OK. But high temperatures can cause coral bleaching. I have seen reefs that lost most of their hard corals to coral bleaching events.

Your temperatures can be OK. But oxygen levels in water drop as temperature goes up. And metabolic rates increase with temperature. That can cause a problem of the collision of higher oxygen consumption and less oxygen available at least theoretically. I don’t know if it happens much in practice.

Most people run their tanks below 80 degrees which gives a bit of a margin of error. You can set up a fan to turn on and blow air on your sump or tank when temp gets higher using your apex and to go off when temp drops. It can work pretty well.