yeah, you have to use a chiller with fog... It's okay for cracking seeds, and cloning, but it's hell on roots, my solution was reading 90-100 degrees, got root rot right away... Now I have a chiller though, so I'm hoping it might work better. I never heard some nutes don't fog well, but I suppose it's possible. I'm considering fogging in a 5 gallon bucket, with a fan blowing into it, and a large tube to let the fog dribble into the root chamber. The Dominaero addresses a little of this by having a muffin fan blowin into the top of the chamber, it stirs up the fog just enough and helps draw out heat. But like I said, I might take it another step, and have the fogger in a seperate bucket. I'm thinking I might design it in a way that the fog will gravity feed into the root chamber, rather than be blown- that way it keeps it's density without being thinned out by the air. If you watch the fog, it sort of dribbles down with gravity, so perhaps I can use this property to my advantage somehow.