If you use all the basic nutritional nutrients, pH Perfect will automatically stabilize the pH in the optimal range of 5.5-6.3 and keep it for a week. If you are already a top grower and are aiming for even higher yields, the Basic food PH Perfect Connoisseur A+B is the right choice. Only the strongest ingredients for maximum yields during the growth phase. The PH Perfect technology automatically ensures the optimal pH value. Experienced growers will be delighted with PH Perfect Connoisseur Bloom A+B, to develop the full genetic potential of their plants.