Magic Water sets up in as little as 12 hours and not more than 24 depending on the atmospheric conditions. Magic Waterâ„¢ Each carton of Magic Water contains enough resin, 6 ounces, to cover an area of approx half a square foot 1/8" deep. You may pour it as thin or as thick as you like, however no more than 1/2" depth at a time should be done. If you want to do a deep pour, do it in 1/2" layers allowing the Magic Water to cure between layers. No seams will be noticeable. We are sure you will find Magic Water to be the easiest and most realistic product you have tried.