ur gonna love the cookies in soil man, the flavors really come through incredibly. some of the better herb I've smoked in a long while. i'd look into KIS nutrient pack (
www.simplici-tea.com) and mix your own soil up with EWC's, sphagnum moss, and perlite. Then you can just feed plain water the whole way through and they come out super clean. Also, you wont get any pests in your soil. I also add some silica, compressed seaweed and humic to my water. KIS has amazing humic acid and compressed seaweed powder that is super cheap and high quality and lasts forever. A pound of each is around $16.