LFS here in town. Heck I've gotten it for free from another LFS, all that I have I got for free.. my friends dad gave me a walmart sack full of it and I wound up having to throw a lot of it away.. It's basically a weed and grows very very fast.

ACF do LOVE it though. they will hang out in it and swim through it and rest in it. Mine sleep in it when the lights are out.