I've got a 20 gal long with 2 small BPs in it. It has about 2 inches of "All Living Things"(petsmart brand) fir bark. It holds humidity the same as Reptibark(not well). I'm going to get a bag of that Forest Floor. My Petsmart was sold out of it today though. I plan to mix the whole bag with the bark I already have and use it in my 20 gal long and my 10 gal. I hope this will help me keep closer to 60% humidity and not 40% which is the norm without misting. And my snakes will be separated.