Aptus Finaleboost, 5 LiterFINALEBOOST Maturation Booster About Finaleboost Finaleboost along with its sibling product Peakboost makes up the Aptus flower development and bulking solution. Perhaps the most noticeable implementation of the Third Pillar of Aptus Philosophy: Mineral Antagonism, Finaleboost moves most of the potassium used during the bloom cycle solely into one product. With this formulation, Aptus has allowed for absolute control of heightened potassium