I do a 50/50 mix of Fox Farms Ocean forest, and Fox farms Happy frog, in 7 gal air pots. Because of the pots and light soil mix I water roughly every 2-3 days, using a water, water, feed schedule. I have had gnat problems in the past with FFOF and I will use a spinosad drench a couple weeks into veg. ANd as numerous people have said DON't follow a watering schedule. Your girls will drink at different rates at different times. Just lift the pot if its light stick your finger in the dirt, if it is dry water..... Your plants have NO idea what a calendar is, why follow a regimented schedule.