How many cans/ ounces of Great Stuff for an 18" x 24" background?

[BettaShawn]

I want to make a Great Stuff background for my 18" x 18" x 24" White's tree frog tank, and am unsure as to how many cans/ ounces of GREAT STUFF Gaps and Cracks I would need. One can is 16 oz.

[arielgasca420]

I think one should be fine but I would get two just in case and if you dont use the second one than return it. that stuff expands ALOT (I mean by 50%) so apply it carefully. I would use a little bit on a practice board just to get used to it before you use it on your background project.

[helm96]

1 can should be fine. I did 2 sides of a 29 Gallon tank with one can. As Arielgasca420 recommended you can pick up 2 just in case and always return the other!