Many heaters have the fully submersible rating and CSA approval. People have become ill consuming federally inspected produce. Matter of choice I guess, I choose to keep the top of my heater above the water line. The adjustment knob is a mechanical interface to the internals of the heater and I just don't feel comfortable having that under water. I do have a small powerhead running my skimmer which has the cord partially submerged, so I guess I'm taking a chance there, but those are encased in epoxy and there isn't the mechanical interface I mentioned as in the heater.

Hey guys,

I came to work and still found my anemone in the same state that it was yesterday. There looks like there is some sort of mucus that has released. Not sure what is going on, I'm about to go in there and check out what is going on, possibly move him. His mouth looks over-pronounced.

Gonna do a water change and try feeding him.