Tickyty
New member
Anybody have any thoughts on whether the wp40 @ 12volts could be heating up a 90 gallon tank. I have been dealing with a 1.5-2 degree temperature drop overnight in my 90gal. With 30 gal. Sump. 110 gal. Total. I have 2 300 watt heaters so I don't think that's the problem. Led lights, so they shouldn't be adding too much daytime heat.
That would be a lot of heat to raise the temp that much in 110 gallons. Referring to Ron's test 1° in 5 gallons is a long way from 2 degrees in 110 gallons. I think there are other factors that's causing the fluctuation. The easiest way to eliminate the pump is to not run it for 1 day and take a look at the temps, otherwise we are just guessing. How are you measuring the temp? Is your house warmer in the day? Is the tank upstairs or in a basement?
If the pump is putting out that much heat these things will definitely not last that long at 12v.