The pH Perfect Connoisseur Bloom A&B is for the experienced, highly artistic, professional and commercial grower. If you are a top-notch grower and has maxed out the potential of your current feeding program and if, after all that success, you still need more yield and potency then pH Perfect Connoisseur may be the right base nutrient for you. pH Perfect Technology automatically keeps the pH in the "sweet spot" every week of your grow.