Personally i just keep using my flowering nutes until my last 2 or 3 weeks of feeding, then i hit the girls with Budblaster, which is a big pk booster 1-52-31. And i start with 1/4 tsp per gallon, with 1 tsp per gallon of Superboost. But i have been known to use budblaster in weeks 3 or 4 and...