Ned (or anyone else):
Care to recommend which heaters you've found to be long lived and reliable (water temp matches what you set the heater at)?
I've recently had failures with Visi-Therm and Rena Cal. You can see moisture in the tubes - one stays on permanently, the other stays off. So much for submersible.
Both lasted for a couple of years, but I was (am) expecting more than that (silly me?).
Thanks.