My Simple 3 Feet CRS Tank

[gryphon]

Originally Posted by gryphon

Do you use a thermometer to measure your actual tank temperature or are you relying on the chiller's temperature display?
The latter would not be accurate as the chiller's disply temperature is measuring the chiller's water tank temperature (unless your chiller is using an external temperature probe).

Usually will not condensation occur for tank water temperature of 24deg or higher, unless your tank is in a warm location.
Maybe your tank temperature was cooled to 23deg or lower but your chiller shows a different temperature.