Hagen 301 powerhead submersible?

[canadawest]

I had to ask the same question when I started about a couple heaters I have.

Packaging says fully submersible (Pre-Set and Ebo-Jag models), but right on the heater it says "do not immerse below this line"

I was scratching my head, and definitely asked before reaching in with my hand to place it in! [img]images/smiles/icon_eek.gif[/img]