What is flex watt

[4Khan]

Okay dokay boys and girls...
I am thinking about purchasing another bp ( kinda like on my wish list or things to do this summer list). I am going to a retile expo show this April and I am a bit of a compulsive buyer ( usually i grab an item... do some more shopping and realize i dont need it and walk all the way around the store again to put it back) so I have a feeling if I see some well taken care of female bps i might get one.

Now, I have had way to many issues with a tank and realize the next time round I am going to use a nice size plastic bin like those used in a rack system. I hear good things about them and how easy they are to maintain not only heat/humididty but also cleaning wise. Heating them with flex watt is what I hear does the trick.....
what is flex watt and how does it heat. where is it put (i know on the bottom side)? seen a picture.

if anyone can give me a run down on how flex watt works and how to properly maintain and set up a snake home like this I would really apperciate this...I know you guys got some wise words for me!
*Erica

[SnakeySnakeSnake]

http://mgreptiles.com/flexwatt.html

There are a few links on the page that should explain everything

[4Khan]

thanks!