The price is good for this little heater. It works well at maintaining the temperature in my crab's aquarium. The part of the sticky backing closest to the power cable doesn't stay stuck to the aquarium though, so that's' why I gave it 4 'paws' instead of 5.

I'm going to get hermit crabs soon so I bought this from my local Petco store. I stuck it on the back of my 10 gallon tank and it barely heats it up. Only the part of the glass that it is touching is slightly warm. Is it supposed to warm it to 72 degrees only? The substrate is still around or below 70 degrees. I put a jacket around the back of the tank. Maybe it'll help contain the heat? O.o

i had my last heater for the hermies,it lasted over 5 years and i stll have it,,great product

I purchased this heater to heat my crabs tank and you can barley feel the heat through the glass .What a waste of $20.

I have had this heater for my hermit crabs for 3 months now. After not very long, it started making a random 'zzt' sound likes there's something wrong with it. It does the trick, it heats the tank by a few degrees, but this noise concerns me. I think I'm buying a new one.

The adhesive didn't stick well, I'm guessing that was due to the fact that the manufacturer put it in a box that was just a tad bit too small! Since it was a little bent inside the box some of the adhesive backing wasn't attached when I took it out of the packaging. I used it for a small "crabitat" and it made zero difference in temperature. Boo.

I bought this to help heat my Madagascar Hissing Cockroach cage, and it does all right except that the adhesive doesn't hold too well. Had to use electrical tape to hold it on, and now it looks kinda bad. Serves its purpose though, I guess.

I got this today for my 2.5 gallon hermit crab habitat. I decided to get it because Lillian & Melvin were lethargic in their wire cage and didn't move around like the manual said they should...given the heat and humidity were correct in their enclosure. I put it underneath the heated aquarium (as specified) this morning and at 3:00 p.m. today I put in the temperature/humidity gauge and it is now 4:30 and the heat in the tank is 79 and the humidity is 75, which is perfect! Already Melvin & Lillian are moving around and being more active. I would definitely recommend this product for a friend but I can see how it may not heat a 5 gallon or more adequately.