Nutrients: How much is enough?

you mentioned that you were in some 'money trouble'

those florotubes are o.k for veg, but if you are planning to flower with them, think again.
if you want to make some $, it is definitely worth investing in some HID lighting. the floro's are cool for supplementing them.

and also, i thought that floros were self-ballasted.

Whatever OhSoGreen says I take as GOSPEL,the man knows his stuff and he would not steer you wrong......