Daily Temperature Range

[NASAGeek]

How much do you allow the temperature of your tank to vary within a 24 hour period??? How tightly do you control the temperature band??

[Amiaki]

80-81


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[RobZilla04]

I've got a digital thermometer in the coolest section of the tank, farthest from the heaters in the sump. I keep that between 78 & 79. Usually the othe side of the display tank is a half a degree higher. Daily/nightly the temp fluctuates less than one degree.

[wrott]

The more drift(w/in reason--2-4 degrees), the more hardy corals become(especially acros).
It allows a more diverse enzyme expression to handle waste/energy metabolism.
Greenbean did a very informative write-up about this years ago.

[89Foxbody]

During the winter, it stays around 78. During the summer it can get quite warm, up to 84-ish until the cooling fans kick on. Never had any issues because it's a gradual increase and not rapid swing.

[ca1ore]

Heaters set the lowest limit at 78.5 F. During ambient of 75 or less, heaters cut out at 79. If ambient is above 75, then tank upper range will climb. I no longer use a chiller, so tank can get to 84.

[kmbyrnes]

My tanks run at whatever temp the house is. No heaters, no chillers. House temps gets as low as 72 in the winter, as high as 82 in the summer.

[NYCBOB]

mine is around 80-82.

[scooter31707]

mines runs at 77 year around

[ktownhero]

My new tank is running an Apex for the first time and for the first few weeks I kept the tank within 0.5 degrees. I then realized that the heater was running too much for my liking and figured it's probably not a good idea to have animals that are used to that much stability. So I changed my programming to allow for a full 2 degree fluctuation throughout the day. I have heater 1 set to go on at 77.5 and turn off at 79.5. And I have heater 2 set to go on at 77.4 (only if heater 1 is struggling) and off at 79.5.