I just use Ice water. From what I can tell, alot of the things that you don't want to smoke dissolve into the water, so why would I want to use something that already has a bunch of crap dissolved into it, like Oj or Power aid? I don't think It would be nearly as advantages as just plain old ice water, but R/O water Might be better, because I think it has just about nothing in it. Don't use ethanol, I saw it somewhere earlier, I've made ethanol, hit the fumes with a lighter, and you get a nice flame front. don't want that in my lungs.