Nute only once a week from my education. Water loom only when wet so to let the roots breath. Get a cheep tester and you will be surprised how much we over water. It changed everything once I stopped over watering my girls. Stick it in the dirt and BAM! No need to wonder, Soil may look dry to you and I, but the roots are still wet and the tester eliminates all guess work. I got a 3 in 1 PH, Light, and Moisture tester at Wall Mart for like 10$. Well worth its weight in gold.