Runtz + Cap'n Kush + Zkittlez

8 seeds success roots but after i put in Rockwool cube with water. Unfortunately,1 seed couldn't grow(Runtz down) :( Futhermore, I light with one 600W (40%) 18/6 but i hang light too far and sprout is very weak but fortunately, i check everyday after i see it i put light around 10 cm closer still remian 40% and change to 24 light for 2 days hope plant be better next weeks