No. Part of the spot issue i currently have, my opinion, is from nutrients splashing onleaves during watering. Leaves process light for the plants and "exhale" oxygen, totally opinion on my part, but after spending a month thinking on and researching this question, I feel its not advantageous. Maybe even detrimental to your plants. A clear water spray before lights out, if low RH, may be beneficial, but feeding through leaves isn't effective from my experience.