Bud Boosters are like Ice Cream. Everyone has their favorite flavors. Ask the people at the shop for some recomendations. You may get a little sticker shock. I use a simple one part system for flowering that I use for the whole flowering phase. I am very pleased with it. It is called Flora Nova. Many people also use black strap molasses added @ 1 tsp per gallon of water throughout the whole flowering phase.