BN-LINK Reptile Heat Pad 6"X8" 8W for 10-20gal Under Tank Terrarium Heating Mat Waterproof for Turtle, Lizard, Frogs, Snake, Hermit Crab

I thought I was buying a heating pad, basically what you're buying is a controller that comes with a free heating pad. I can't believe the price of this, I would expect at least $50. Especially considering that it is for pet use.It is a temperature controller, displays current temp inside tank, and has a separate permanently wired temp sensor that sticks to the inside of the tank with a suction cup. The suction cup works very well, even after repeated removals. The heating pad plugs in separately to a 110v plug on the controller. You can use any 110v device, I would only recommend using a heater or heat lamp though lol. I suppose you could wire it into a stereo, and when the temperature gets above your set point it starts playing Jimi Hendrix. The problem with that, is you then have to figure out whether or not your reptile is more of a country fan, or a rock fan..The heating pad is completely covered with adhesive on one side for sticking to OUTSIDE of the tank.It's a lot larger than I expected, although I didn't look too see what size I was buying - I just expected smaller.The instructions say multiple times to place on the outside of the tank, so be aware of that. Also, it is absolutely not supposed to be placed on wood or anything other than glass, according to the instructions, so be aware of that.After reading the instructions, and being aware of that, I decided to just set it under the tank, on top of wood. It wasn't even real wood. It was crap particle board. Maybe the glue in the particle board increased its thermal properties, but I doubt it. I think it's more probable that the heating pad doesn't get hot enough to catch wood on fire.I didn't stick it to the tank because we are replacing the tank in a month. I then decided to move the tank and stick it to the side of the tank temporarily, so I removed a half inch or so (ended up being about an inch) of the adhesive backing all the way around the edge of the heating pad and stuck it to the glass so that I can remove it, and the rest of the adhesive is unused for the new tank.If this is not an absolute permanent fixture on your tank, I would advise sticking it to the tank using only a little bit of the adhesive (by removing small sections of at the adhesive backing to expose only small areas of adhesive). You will never get this off the tank in reusable condition if you use the entire adhesive sheet. I probably exposed too much adhesive. It's going to be a pain when I go to remove it.

These small heat pads are good for 20 -40gallon enclosures. They do not emit an exaggerated amount of heat so I like that about them as the heat can’t be adjusted. So har they have not overheated to the point my reptile will suffer any burns.

Surprised it worked for a tiny, plastic betta bowl. Not too hot but warms well.

This sticky pad provides good heat for the one side of the tank/terrarium for my baby crested gecko to have a warm area to hang out in and a cooler side. That said, I didn't like the idea of having it on one of the glass sides so I stuck it to the bottom and it doesn't really stay stuck to it all the time. Ever few days I notice that it's back on the table surface. The tank is low to the table so it still works okay, but probably doesn't provide as much consistent warmth as a result of it detaching. This one doesn't have a heat gauge so only use it with a digital thermometer so you can take care not to let things get too hot.

works as advertised

The functionality is great and it’s durable, but it’s not true to the description and it’s not worth the price. The sticky on it doesn’t stick that great.

Good little heat pads, and the only thing I wish is that the adhesive pads could arrive separated from the pad (with peel-off sticky back) so that if we don't want adhesive we can skip it. The other thing I'd love is a set of marks around the dial so that we can get a sense of where the best setting is, and later repeat that by looking at the dial marks.I used two pads on either side of the interior of a small plastic cooler to make an egg incubator. Using two pads, one on each side, allows for more even heat within the makeshift incubator. I like these pads and likely will buy another set of them as a backup for the future.

Works like a champ. No problems!