Alright thanks! I think I'll have to go with the flexwatt but I will need help figuring out how to wire it together

i saw that these cords you can order serperately..
is this cheaper if I go to a hardware store? or order online?
And how do you attach the wire and then keep the flexwatt on the bottom on the tank, is it sticky on one side?

sorry for so many question, I just want to get this right and do it well.

If anyone has a picture of the bottom of their tank, that would be great
Thanks!!