NY_Caveman
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Catching up. A couple of thoughts:
Heater: I would not worry about the heater being in the sump. The display will be fine, but throw a glass thermometer in the display to check once in a while, it may run 0.5 to 1 degree cooler than the sump, so you may want to run the heater a degree higher. I would highly recommend an Ink Bird ITC-308 Temperature Controller for $30. That puts all of the wear and tear on the controller, not the heater’s “prone to fail” thermostat.
Cover: I would use a screen cover. Gas exchange is more important than how much evaporates. Also, an enclosed cover can become a real pain with collecting evaporation as well as salt creep.
Heater: I would not worry about the heater being in the sump. The display will be fine, but throw a glass thermometer in the display to check once in a while, it may run 0.5 to 1 degree cooler than the sump, so you may want to run the heater a degree higher. I would highly recommend an Ink Bird ITC-308 Temperature Controller for $30. That puts all of the wear and tear on the controller, not the heater’s “prone to fail” thermostat.
Cover: I would use a screen cover. Gas exchange is more important than how much evaporates. Also, an enclosed cover can become a real pain with collecting evaporation as well as salt creep.
