Jager 150 W Heater

[ccolt1]

Are these heater's fully submersible? I have to stealth heaters and I need to get two new ones for my sump. I will have one for the main and one for a backup. I have a 55g and a 10g sump. Thanks

 

[the reefer]

yes the new ones are. on dfs they sell them and they state that they are fully submersible. also on the box and on the heater it only has a minimun water level line not a max. i have to 50 w bought them 2 months ago