Hi Ray,
I have a couple of ebo jager heaters and yes they can be fully submerged. We've discussed this before here on the board I think.... yes we have.
Go here:
Submersible products in Canada
The discussion starts with hagen powerheads but eventually makes its way into why they have that "do not submerse below this line" on them.
Christy [img]images/smiles/icon_smile.gif[/img]