Hey fellow reef lovers. Question from a newbie setting up my first reef tank. I bought two 100w Jager Heaters for my 53g tank (primary and a backup heater). I was planning on placing them horizontally in the bottom of my sump (thought I saw them placed that way in a picture of someone's tank, or at my LFS). I read the the instructions, and it says they have to be placed vertically, and there is a line on the heater itself and says not to submerge past that point (about 3/4" from the temperature dial on the heater). So...should I NOT submerge the whole heater? And if so...the water isn't going to be really deep in portions of my sump, so what's the shallowest the heater can be? Is it ok as long as the whole coil section of the heater is covered with water?
Thanks.
Pam
Thanks.
Pam