Yellowing leaves. Zinc/Nitrogen deficiency?

Hi mate, I have been growing hydroponics (dwc and now a wilma type) for quite a long time and I use exclusively Advance Nutrients . As I have seen from your diary the problems that I see are : 1) You use too much nutrients. In the first 2 - 3 weeks I don't go over half the minimum recommended dosage, and still there is the possibility of burn. 2) You don't use the correct program of A.N. Check their site and you will see you still need to use tarantula, voodoo etc etc 3) You have too much heat for a Dwc system. I leave in a hot country and dwc is a no no unless you have a water cooler. What you do is check you roots first and get some pics. If you used 10 ml/lt then you shouldn't have plant by now. I think that you may have root rot since you don't use any microbes. Any way take and post some pics first and we talk again.