Potash plus was the first potash based flowering booster specifically designed for hydroponic use. Potash plus is the industry leader and benchmark for this popular type of additive and is Australia's No1 potash based flowering additive. Potash Plus is the only ionically balanced potash based on the market, as are all the Dutch Master products. Key Benefits Provides additional balanced phosphorus, Promotes dense, large flowers, Designed to prevent nutrient lockout, Easy to use.