Potassium makes more sense thanks. They are in a soiless mix, and the plant they are growing from went nutty on me and a split off in a V, if you go to my profile and go to the thread I started you can see the entire plant (thread is called: What causes this?). As for watering I water we the plant needs it, once every 5-7 days. And use a 2 part nutrient mix.