I only like to use it last 2 weeks. I have used it last 3 weeks and honestly I got the most ridiculous explosion of pistols and density. It was overkill. Run Big Bud all through flower until last 2 weeks then replace it for Over Drive. Good Nute companies spend a lot of money time and effort to formulate their nutrients. Other than maybe baking off the recommended application rates, I have always had the best runs following directions.