mpcart
New member
In-sump pumps can also heat up the water. If your return pumps or skimmer pump run hot or are in the sump, you might want to replace them with cooler running external units.
My heater never turns on - even at night when the lights are off. My return and skimmer pumps keep the tank at 78F.
-Mike
My heater never turns on - even at night when the lights are off. My return and skimmer pumps keep the tank at 78F.
-Mike
