Reef Temp

[Aquattro]

Temp swings suck, but they happen, and most healthy corals should handle it. I went a long time one summer bouncing from 80 to 90 daily, and only lost one species of acro (8 frags of it). Everything else was fine, although perhaps a bit more brown..

[RuGlu6]

24.5C 25.5C (78) here
http://www.wbuf.noaa.gov/tempfc.htm
Heater is my controller and water tubing coil cooled with cold tap water is my chiller.
I run a 1/4 inch OD tube from my RO/DI inlet to the sump, and back to the P-trap, with straight valve slightly open to the fast drip.
There is a 15 feet tube coil in the sump acts as a heat exchanger/cooler.
Back to the RO/DI waste line and in to the drain. water cost for a few short Summer month in Vancouver where it rains 9 month out of 12 is nothing compare to the cost of the controller and chiller and electricity to run the chiller.


Cut water supply line to RO/DI and insert the 1/4" OD line in with straight line valve for flow control.

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Run the tube line to you sump and make a coil that will act as a heat exchanger

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Run the tube line back to the RO/DI waiste line and or back to the P trap

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You summer chiller is on line !
If water will get below set your heater will kick in.

[RuGlu6]

Originally Posted by RuGlu6

24.5C 25.5C (78) here
http://www.wbuf.noaa.gov/tempfc.htm
Heater is my controller and water tubing coil cooled with cold tap water is my chiller.
I run a 1/4 inch OD tube from my RO/DI inlet to the sump, and back to the P-trap, with straight valve slightly open to the fast drip.
There is a 15 feet tube coil in the sump acts as a heat exchanger/cooler.
Back to the RO/DI waste line and in to the drain. water cost for a few short Summer month in Vancouver where it rains 9 month out of 12 is nothing compare to the cost of the controller and chiller and electricity to run the chiller.

This small heat exchanger coil works amazingly well. My tank is 65 gal + ~10 of water in the sump. For larger tanks i would just increase the size of the heat exchanger coil.

[Aquattro]

Just an update on raising my temp to 79. Since then I've noticed increased growth on almost every piece i have. No change in color at all, but some pieces that appeared dormant for a year suddenly have grown to triple what they were.
So I'm changing my original answer to be 79F as the optimal temp

[Enigma]

Have you noticed any changes in any of your fish or inverts?

[Aquattro]

Originally Posted by Enigma

Have you noticed any changes in any of your fish or inverts?

Nope, the only difference is an increase in coral growth. I might suggest that my skimmer fills up quicker, but that could be from other reasons.