i've been bubbling everything at least 12hrs, 24 to 36hrs if i have the foresight to start a batch early
sometimes i'm out of town and have to water right away, but i still give it a couple hours at least.
I have just harvested a couple ladies, and have a few different batches in flower ranging from a few days to several weeks and it appears i've conquered my early yellowing issues. I suppose i attribute it to:
1. heavy amended soilless mix with large variety & at last 50/50 reused soil (kelp, alfalfa, neem, "vegan mix", azomite, greensand, granular humic, dolomite lime, epsom)
2. Natures Nectar Nitrogen (NNN) added on top of everything else @ 5ml/gal for first feeding in flower, 2nd feeding also if plant doesn't darken up enough.
3. heavy feedings of biocanna with Aptus Fasilitor
4. everything fed is an act, full feedings nearly every time with a handfull of compost or ewc tossed in to bubble with it
Now i haven't been using the Humboldt bloom at all, it left a bad taste in my mouth because it was always after my first feeding with that in it that everything started yellowing up and gettin' crispy. I was also not bubbling things much either then and i felt like i was just mish-mashing things together. Now that everything fits in a bit better i may start adding it into a few teas @ 5ml/gal in flower to see how it does, at least to get rid of it anyways, i don't like that it's 0-10-0, i'd like it at no more than 7.