Where is my heat coming from?

Shagon

Shagon

Member
At night I get my temps down to the 78" range with a fan blowing on my tank. With all the lights off and my heater unplugged, with in an hour the temp creeps up to 80" with the fan off. I have two mag drives running. One for my return and one for my water flow. Both are not running hot. Where else could this heat be coming from. I have a skimmer but that shouldnt be producing that much heat.

BTW 55 gal tank 10 gal sump.
 
N83259

N83259

Member
In-water skimmer pumps can indeed add to the heat load. The more robust the pump, the more heat in most cases. Room temperature plays a roll as well. 80 isn't too high however for the average reef tank.

You mention a fan blowing on the display tank. Maybe another blowing across the sump would help lower the temps if that's what you want to do.
 
T

TylerHaworth

Active Member
Mag pumps tend to put off quite a bit of heat, you likely can't feel it though because the water is so quickly dissipating said heat.

Also, what is your ambient temperature?
 
Choff

Choff

Well-Known Member
I think I saw Glenn posting that the most heat in a RSM 250 was coming from the skimmer pump. More than the lights, which I found incredible.

How are eheim on heat? I beefing up my flow rate on my chiller and swapping out a rio for an eheim.
 
Shagon

Shagon

Member
I have a 400 in the sump for return and a 1200(not submerged) for flow to the tank. The skimmer uses a 150 pump. My living room during the summer get up to about 77". Its 105" outside today.
 
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