stealth heaters submersible

[brcacti]

Are they completely 100% submersible or not? Or is the top part out of the water??????????????????????

 

[Blub Blub]

100% submersible.

 

[sabotage]

Best heaters on earth.. i have 3 of them..@ in tht sump and 1 in the tank....can withstand a cichlid beating and keep on heating..tm

Dont steal my line.......