My temperature for 6 years is always set to around 26 -28 degree C. Or about 78-82. For short spells in uk summer, temp goes up to 87-88. Tigers are fine and tend to eat more food than normally.
In the past when my heater broke and I didn't realise, the water did go down to 21-22 C.
I wondered why my tigers went all unstable and were very sluggish.
Am from singapore which is a kind of hot place + having my lights on about 8hours+ a day thats why i have my temp at 87f. Will that temp be fine? Should i trow in a chiller?