I had to take my chiller off line this week due to some electrical upgrades my landlord decided to do (just in time for the heat. Awesome). I hit 85 today and I'm pretty sure it was higher yesterday; it was 84 when I got home at 11pm.

I think everyone above covered the major points. Reverse period should do the trick. Worked well for me in the past.

im running leds and im pushing 81 degrees right now

My main tank is fully LED (28 x 10w emitters; mix of 455 nm blues, 10000k, 6500k, and 20000k) and the tank doesn't get warm from the lights at all.

currently still 88 lol lights been out all night:P

I usually keep my tank at 84F with a controller that turns a fan on at 84.5 and lights out at 85.

Central air for me :)

Wow, that's 31C :surprise:

And your's is about 29.5C

Too hot for my likin' for any tank
Hope you're guys' tanks don't care about the 'xtra heat http://r12.imgfast.net/users/1211/34...les/492339.gif

i have led lights and im still running a chiller in these temps! keepin the tank at a nice 80 :) but i live in a small apartment with a 95 gallon tank :) it gets toasty in the apartment wich sucks

Correct me if I'm wrong, but I think the OP is looking for options besides chillers

No where in this thread says no chillers other ideas please. A chiller or an ac unit in the room are great ideas to keep your tank cool better cost saving way then changing to led wich will run you like 2000$ on that size tank

I keep all my windows open all night long, then I close the ones facing the sun during the day, and I run every fan in the house I can

Makes a big difference ...

And when I can't stands the heat no more, I turns on the AC and burn the power baby !!!

Only takes an hour or 2 to cool our whole house down with our 2 units

There, is that what you wanted to hear ? :mrgreen:

I only thought the OP wanted options other than AC :wink: