I am a 1st time hydro grower and have grown several times in soil.
I am using:
1000w MH light on 18/6
ebb & flow set up
6x6x6 rockwool w/ coco mat under cubes
watered twice per lighting period for about 3 mins
Botanicare nutes..... pro grow, hydrogaurd, cal/mag,
about 3 weeks into...