Chubbsanswered grow question 4 years ago I grow in soil but dabbled with dwc a couple times and I'd keep my ppms in seedling/sprout stage 200-400ppm
Early to mid veg 400-800
Mid veg to early bloom 800-1200
Early bloom to finish 1000-1500
Hope this helps I use GH 3part flora series micro,gro,bloom with some Calimagic. Happy Growing