So I have an ebo jager heater that is 300w. It is in a 105G tank with a 40G sump (the heater is in the sump). I have had this tank running for days now and it seems like this thing will not shut off. The light is always on, the temp is never really the same. It ranges from 70-75... I can't get it steady and the amber light is always on.
Any advice?
Any advice?