dont worry the only fert im using is slow release balls that have already been put into the soil, this is like my 2nd grow and im just brushing up on the basics seeing what i can do with little to no fert since im using free nug seeds i saved, i love the learning experience, made me so much more knowledgeable figuring things out on my own [with a little help from fellow farmers such as the wonderful people on these forums] =]