I would add RO-rite if the water I used was the RO/DI for bowls ect. I just use the RO water for things like that. Distilled water is the best for misting as it contains zero minerals. RO/DI is the closest you can come to this.

I'm pretty sure there is a nice article on water right here on Frog Forum you might be interested in. You will just have to hunt it down.