I use a cheap moisture meter (with 8 inch probe, about $6, the whole grow) It has three readings: wet-moist-dry. I water when it says DRY. Works great on 3gal/10 inch pots, too...:thumbsup:

below is a pic of it, in front of the cups
Dutch Pimp Reviewed by Dutch Pimp on . how much H2O? i have a lil question.. how much water.. aprox.. do i need to give my girls in solo cups?? i have been watering till a little bit comes out the bottom but then they seem to show signs of over watering.. what do i do? thanks -J Rating: 5