My DWC (Deep water culture) at home

So. It's time to prepare my DWC (Deep water culture) pot that I had bought a year ago. It taked from me something like half hour. Cleaned everything with water, connected all pipes and pump. Last week I had bought 20L of water in the market just for the plants. The nutrient I've used: Plagron Hydro A, Plagron Hydro B, Plagron Power Roots. PPM counts 384 on 6.6 Ph. The plant looks healthy up to now. As I mentioned before for germination I used 3 seeds 3-4 years old. One seed had died other two geminated. I decided to start growing one of them in a cup for later replanting in the soil. Remeark: Started on 20th feb, 3 days germ. First week jf veg will ends on 1 march.