The only purpose of spraying "him" again in 5 days is to delay the action for the intended girl to catch up now that I know that "she" is a now definite "he"......its all in timing really for direct pollination ((cross fingers)) vs collecting an painting. At this moment in time, I am opting for direct pollination (best) though will "paint" to make sure watching the pistils discoloration for what is needed. Full disclosure, I have had success 7 of 8 times doing it this way in the last year
Its like any foliar feeding with a topping really...if watered within 24 hrs before a high stress technique, the roots clamp down and the leaves swell (my preferred transition for conditioning) then do nothing for 4-5 days. On the other hand, if wait until the next watering is needed then apply the high stress treatment, the leaves don't show the telltale puffiness of nute intake/binding and roots tend to die in the aftermath.....THIS is my learning curve going from full plants to micro in soil though in doing Bonsai (in between) I am starting to learn the difference which isn't much really just timing and knowing what the plant (roots) can handle.
IF a plant is in distress and I cannot pinpoint it from from I applied, i'll foliar feed to find out then adjust my toppings from there. Now sometimes its immediate while other times, it takes 3-4 wks to decipher just because I am not willing to put heinz 57 in my soil from the get go. Now I know this is my handicap with auto's let alone micro grows so trying for something in between
I am not quite there in my confidence though its growing for sure.......I know how the plants grow and what they need an their stages and have gotten better at hand watering though not as much as micro's need soooo I am working on an in between solution using my self watering seedling incubator as a guide to try next with a no till approach since the blumat mini didn't work....if this doesn't then I will bite the bullet and REALLY learn dwc like you and TrevorLahey does. One step at a time