Quote Originally Posted by ClarkT View Post
I would recommend insulating the back and sides of the tank with 1" foam. You can get a sealant and paint it--make sure it's for foam.
Blue or pink foam, white isn't worth it to deal with.

To add to the make sure it's for foam... you can make napalm. So WATER based contact cement if you're sticking something to the foam...

and if you're going to paint it.... good luck. I generally put something on top of foam before I paint it - like glue+paper.