flexwatt with tank?

Hey guys i got a foot of flexwatt lying around and a 10gal long tank. Just curious, how do i set up the flexwatt if i wanted to use it instead of a UTH. do i need to have the tank elevated so theres a half inch gap between the flexwatt and the surface? what kind of tape can i use to tape the flexwatt down to the table?

thanks!

yes you can use the flexwatt, use foil tape to tape it on.

should i tape it on the bottom of the tank or to the table itself? should i leave a 1 inch air " gap" under the tank or is that not necessarY?