hey there i am growing 30 white widows 2 ...my friend...there in my 4x4 ebb and flow ..but will be transfering them to bigger 9 inch net pots in 2 the 4x8 ebb in flow ..anyways i been growing in dirt for a year ..so i kind of understand you ...anyways i use FOXFARM FEEDING SCHEULED and its just working great... do you have any pic's of your grow i will put some pics of mine ....get the feeding scheuled in there web site...aka use googlecom to fing it foxfarmfor.com something lol