You need nutrients that are formed for hydroponics. Dont use that in your setup.
If you want to sucessfully grow hydroponics you must put out some money on quality nutrients.
I suggest the General Hydroponics 3 part(Grow, Bloom and Micro)
Or Advanced Nutrients 3 part (Grow, Bloom and Micro)

I think you should read up a little bit about hydroponics..here are some of the overgrow FAQ's..Very useful info

http://growfaq.medicalgarden.org/growfaq/