my heat pad doesn't work?

[beringer]

i just got a heating pad that adheres to the bottom of my aquarium. i've had it plugged in for about 8 hours now and nothing. any idea whats going on? is it just not working or am i maybe doing something wrong. and yes there is substrate in my aquarium. any thoughts are appreciated!

[infernalis]

If you place your hand directly on the pad, and feel nothing, Take it back to the store and exchange it.....

[bsol]

try another outlet too... you never know!:)

[infernalis]

Good thinking Brandon:D

Try that too....

[Loren]

Yep, between the first 2 responses, thats about it. Those pads should get hot enough that its unmistakeable is they are working or not.
:)