Stupid question, probably, but I want to be certain before we dip it! We have a 100 Watt Marineland heater that came with our new 20G kit. Their website says "fully submersible" yet the instructions say to not let water touch areas that it shouldn't, yet does not tell where exactly those no-no areas are. Looking at it, I see vent/slits up towards the top of the bulb-area where the adjustment clicker is, and I was presuming that was not safe to get water in. But if so, even having it as high as possible, it doesn't look like a lot of water can go there, so I'm not sure.
So at the risk of feeling stupid, I thought I'd ask. Thanks!
PS: Got 6 females. One was bloated and I mentioned it and they knocked 5 dollars off the whole purchase. She seemed feisty at the store and I thought I'd at least give her a shot. Poor thing died before we even got halfway home. :( I am testing her water, taking pics, and plan on making yet another complaint with them. This will make my third complaint over the care of their fish, and not just their bettas. All their fish are treated horribly! The bettas just have the worst of it. She was a beautiful MG CT too, round as a marble, but not yet pine-coning and still upright/swimming well. I think the activity and stress of being moved around is what done her in. But a fish shouldn't so sick that it can't make a 30 minute car ride home.