irder to control how much water flows through your pots you have to make holes in them by drilling all you need is drill and frill bit strong enough to cut through best one to use 3/4 Spike tip bit it cuts straight through you can't use it to fast because if you do you'll going to have bigger holes and just might crack entire bottom of the pot going to be buying another one so use the drill in slow speed do this to each pot it depends on how many you have drill the holes before you put the dirt in make sure you have something on the bottom of the pot once you pour the dirt in it