My temps run from 78-79 usually unless it gets hot outside. The chiller only kicks in after I feed the tank as I turn off the pump and the heater is in the sump or if its blazing hot outside and the tank hits 82 as its set to allow a 3 degree swing.

78.6 steady apparentyl, atleast thats what it always says on my controller. night time it drops to about 77.2 giver take

To avoid my ceiling temp from going too high I allow the tank to cool down by morning to 78. It still hits 82 before the halides turn off. It takes until early morning when I get up for it to cool back down to 78. A big swing compared to most but I refuse to run a chiller anymore.

Brad's sick of the LED electrical savings already! Buying a heater now? :lol:

Do you recall what your system's total draw was over 24 hrs before with halides? I'd be curious what it will be with a few hundred watts of heating and the LEDs.

Interesting question. You don't see the LED manufacturers talking about this much do you?

I have increased mine from 78 to 80 as well. Just to see how the corals react. I am really curious to see how it makes a difference as the temperature in the ocean decreases dramatically with depth (I remember being frozen after a couple deep scuba dives and swimming on the surface to warm up).

Im hoping the ones closer to the surface were growing faster not only because of the the increase in light but also warmer temps.

The test will start today lol

Coral temps
 

With the warmer weather my tank maxes out @ 80.5F (low of 79.5F before heater kicks in)

Anyone else see changes in tank growth?

And with that said, around June 10th I dropped my tanks to 79F :razz:
One reason is it will, over the year, be cheaper when I math out the heaters and chiller operation. This is due to my house's poor insulation
Another is the oxygen level
Yet another is my ability to spot things that are going wrong before they get out of hand

I don't mind if the corals grow a little slower, plus, maybe some of the other critters may live a little longer and need less food

:noidea: just a thought

Yes. At the beginning of this thread, I decided to try raising my temp to 79. Since then I've noticed increased growth on my SPS.

I prefer 78. Seems everything is happy at that temperature.

Mine hit 89 this week. No air conditioner... Until today... And the tank cooked. Have a couple corals dying. An acan and some SPS.... Including my amazing purple birdsnest. Sad week. Tank moves down stairs by next summer.

wow, most of my corals would die at that temperature, including my clams. My temps reached 81 one day and I lost a full colony of acropora that day to RTN, the clam looked sick, the gorgonians all closed for a week after that. wierd that mine don't stand too much heat.