Man..since you dont have any nutrients for em' I suggest buying products like Voodoo,Scorpion Juice,etc..these products colonize the root mass with tons of fungi,bacteria and other organisms that feed the plant,and keep it healthy..how do you think plants grow in the wild??The soil is teeming with all types of beneficial micro-organisms...these products,along with MGMC and coir is the guerilla growers best bet to a huge harvest...the MGMC and coir helps retain moistues and other humus....also consider perlite and horse manure...