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. [emoji2957]