moisture in heaters

[brady]

I have several 150 Ehiem heaters that have moisture in the glass tubes and
they cannot be adjusted because apparently they are short circuiting.
Anybody else notice this with these heaters?
Jay

[danotaylor]

Not me bud. I have a 300W eheim but it's only 6 months old. How long have you had them? Perhaps try for a warranty replacement ifbunder 12 months old...

[Filip]

I have eheim for a couple of years now with moisture in it.
It serves me perfectly so far and just recently I have found info that its manufacturer said that the moisture is normal and it comes from the lubes inside the heater .

[danotaylor]

Jay mentioned that they're short circuiting & have an inability to adjust...not serving him at all, plus a huge risk to overheat & cook his fish...I would remove them immediately and contact ehiem or the supplier to see about warranty, depending on their age of course...

[Filip]

Jay mentioned that they're short circuiting & have an inability to adjust...not serving him at all, plus a huge risk to overheat & cook his fish...I would remove them immediately and contact ehiem or the supplier to see about warranty, depending on their age of course...

You are right Dan. Ive reffered solely on the visible moisture in my answer .

[MKCall]

They are short circuiting? So the heater keeps kicking out (shutting off) or are you getting an electrical current in the water?

I currently have 4 Ehiems (3-300W & 1-150W) although all of seem to have moisture in them at one time or another. I can say I have not been as happy with the 150 as I have with the 300's. The most important thing with Ehiems (IMO) is to find a temperature that is does actually turn on and shut off and then you can adjust the red calibration arrow and only then adjusting the temp. Otherwise you will be chasing your tail!

[Cove Beach]

I’ve had Ehiem heaters for years, but have never run them submerged because eventually the seal will fail, as will most. Learned this with my old reef systems. Better safe than sorry