2nd stage budding use beastie bloomz (Higher nitro for stacking)
3rd stage for filling juicy fruit flavor, Kool bloom at 1/4 tsp per gallon (I use it at 75%) or 5 gallons water with 1tsp kool bloom.
FLUSH AFTER! Plenty of water 2 weeks before harvest.
Sure enough the sugars hit like mad in a few days.
Be ~SUPER~ careful with these chems! Read every thing and ask twice and call tech support.
They are designed to put the plant into stress so must be done near the end.
I use this method only one time on each chem.
Kool bloom powder 2-45-28
http://www.generalhydroponics.com/genhydro_US/koolbloom.html
Fox Farms Beastie Bloomz 0-50-30
Cha ching also is an option early on,.
Don't use these on first stage flowers.
I actually paid $80 to learn that with a farming consultant visit.