Ideal upper temperature for soft coral tank.

[Galeno rocha]

Hi all!
I have a small 10 gallon tank with soft corals, anemones, some hardy LPS and one snall clown.
I have had some problems with severe coral loss and anemone bleaching during heat waves. The issue is I live in a very hot climate (82 to 91 F year round, including nights).
I recently started using a temperature controlled fan and auto top off system. The noise and constantly replenishing ATO reservoir is becoming a burden.
Currently keeping temperature between 83.66 F and 84.04 F.
Is it a safe temperature, should I keep it lower?

 

[Polymate3D]

I would wait on more experienced people to chime in, but here is my experience.

I have had soft corals in 28<29c over a course of a week in peak summer here with no ill effects at all. The others sulk and you try and work on it, but the soft corals all seem happy enough. That's 82<84f where you are now.

So if you can keep it stable around that value, I would say you'll probably be okay. Key is it being stable and not fluctuating wildly between day and night. Maybe have a heater set to around 81f as a low point?

As mentioned, my experience is small and for weeks at a time at those temperatures. Long term I have no data that would be useful. Good luck!

- Paul

 

[Mr. Mojo Rising]

What was the temperature of the tank before you got the fan and ATO?

 

[Galeno rocha]

Thank for the replies. A heater would not be needed, as the tank never gets below 82,5 F even in the coldest possible night.

Temperature before was usually around 88 F, but 90 during the peak of the heat wave.