I think you're right for a Hydroponic system there's no point to foliar spray. I've personally always usedfoliar spraying but that was with outdoor organic soil grow.

Less work for me:-D Gotta love Hydro.
Buddahbear Reviewed by Buddahbear on . Foliar Spray Do you think it's better to give all nutrients and additives to the plant through the roots or is it important to spray the leaves as well. I use a cal mag+, liquid karma and super thrive. Rating: 5