The best menthol I've found is from e-liquid-planet. A gallon of water does seem like a lot. If you go the McDonalds and get a large drink that's 32oz. Drinking 4 of those in an entire day equals about 1 gallon. You can also use a bottled water which is usually 16oz. So eight of those would be enough. An easy way to get that gallon is by having a bottle of water, juice, or some milk while you vape. Beverages with caffeine dehydrate and rehydrate at the same time. There is a formula based in the amount if caffeine per serving but I can't remember it. Coffee, Pepsi/Coke, Red Bull, Monster Etc. all contain caffeine but they also contain water. The problem is it requires MORE of these products to truly hydrate. So you could create another hazard by ingesting to much caffeine. Not saying you can't drink these but for rehydration water or sports drinks are best. If the water gets a bit to plain you can add flavors. Remember PG and VG are hygroscopic (they attract water) so that's why you need to hydrate while vapeing. Science it's so boring it's fun. Or is that just for me.
