I'm wondering if anyone knows if these are submersible? I have a few of them that I threw the boxes out for and never got around to using but now I have a use for one if they're submersible... I can't remember/find online what brand they are even. I got them from Petsmart about a year ago. They look almost identical to a bunch of ones that are submersible but before I plunk it in my Betta tank I want to be sure so I dont fry him/me.
If I was to give an educated guess I'd say its submersible from the fact it has suction cups presumably to fasten it to the tank glass. The only way to truly tell is to submerge it in a container, turn it on and put a finger in the water. It won't kill you but a tingling sensation would be present