I will spray foliar about 1 time per hour (if I have the time) with water only, 6 days per week.
I will spray instagreen 1 time per week @ 400ppm, about 1 time per hour.
Reason for so much foliar spray? Low humidity. Like under 20% low. So they soak up the moisture of the foli spray very quickly. I see a rise in RH to about 35% after a good spray, but as it dries up, my RH goes back down to about 20%. Keeping them lush and green during veg mode!