The Green Pad Co2 Generator is one of the simplest and easiest ways to generate Co2 for your garden. All you have to do is hang the pad up above your plants, lightly spray with some water, and walk away! The Green Pad is activated through moisture and will begin working immediately. Whenever you check your plants simply give the pad a spritz of water to keep it moist. Simple as that! Hang a second Green Pad up after one week and spray it just like the first pad. Doing this will allow the new pad to ramp up it's Co2 production while the first pad starts to wind down. You may throw out your first pad after two weeks. Follow this routine and you're set!