Are you refering to veg or flower cycle?

Only time I foliar feed is to correct defeciencies. Other than that, I let the roots do their job. Plants are pretty effecient that way. Would be nice to be able to keep an unrooted clone healthy and growing, just by foliar feeding though. :thumbsup:

Anyway, you've gotta be careful with foliar feeding. It can leave a residue, clogging the o2/co2 exchange pores (restricting the respiration*)...the lights can burn the misted tops, and high humidity can present a problem, especially in flower. The dilution rates and times will be much different, and there's the ever-present possibility of nutrient burn or defeciencies till you get the ratio and schedules right.

* Respiration: Energy for Plant Metabolism - CliffsNotes