Detail for newbie SS

I put 4 seed in the water about 8 hours. After that, i put 4 seeds between 6 layers of wet paper towel inside zip bag. Keep it in dark for 12-18 hours. When the root come out. I put it in rockwool and set it in hydro system. When the green leaf appear. I turn on the light for 18/6. Only 2 optic led. They dont need to much light now.