Submersible heater - where is the sensor ?
I bought a 50 watt heater (Aquatic Gardens) at Petco. For my 10 Gallon.
Because of it length I would have to mount it either diagonal or horizontal.
Now I thought I'm very bright and let the head look out of the water, so I would not have to reach into the water to adjust the heat setting.
But even on high the temperatur declined. Now it seems that the heater seems to have stopped working alltogether.
I know the diagram showed that you should not mount it only partially submersed but I thought that would only matter for the heat element, not the controlhead.
Could it be that
a) the heat sensor is in the top of the heater ?
b) because the head was not submersed it kind of burned through ?