Had the very same problem...I went to Walmart...3M makes a little package of stickey back velcro. I think 3ft of it for about $4.50...look good too once it is all mounted up...just don't mount too high off the floor of the tank since that is where your snake will be! Mine has prolly 2.5in from bottom of Accu-Rite to the bottom of tank.
Josh,Court,Ocho and Ibo
I use the exact same stuff. It also works great for other projects around the house.