heaters failing, mot one, not 2 but 3

[lastlight]

Originally Posted by hillegom

So if you connect all the heaters to 110 V and bypass the controller, all 3 do not get warm to touch? Definitely not good to have moisture in the glass tube. Maybe they are not submersible.
I wonder if your controller is still good?

Strangely even with the eheims everyone says you can submerse them. 1 of my 3 has moisture in it... still operates but i don't like it. It's the gen before the current ones.