Question About Fluval Tronic Heaters

[Aussie_Dog]

Okay, when I bought a Fluval Tronic heater (300W for my 60gal), I noticed it had a minimum water line level on it, which I figured was a no brainer (make sure that line is below the actual water line, or else the heater will burn out or something). A couple of weeks ago, I changed out the water to fix the tank's stand, and when I removed the heater, I noticed there was another line: Maximum Water Level. So, does this mean the heater isn't fully submersible? At first, I'd had the heater poking out of the water a bit (the dial poked out, so I could adjust the temperature). Then I dunked it fully, horizontally, to more evenly distribute heat. Now I wonder, was that dangerous? I don't want to break the thing, and I don't want to electrocute myself one day when fumbling around in the water, lol. I've had the tank set up (cycling) for exactly a month now (so figure about 2-4 weeks of improper use of the heater, lol)

 

[dthoffsett]

According to every website I could find on them, Fluval Tronics are completely submersible. Did it come with any paperwork, or do you still have the box, it should say on either if it is.

 

[riggsy]

my Fluval Tronic heater is fully submersed and I havent had any problems

 

[adamgreen240]

so is mine , its fine under full water , mines the 300w version aswell