When you use all the basic nutritional nutrients, pH Perfect automatically stabilizes the pH in the optimal range of 5.5-6.3 and maintains it for a week. If you are already a top grower and are striving for even higher yields, pH Perfect Connoisseur A+B basic nutrition is the right choice. This special formula contains only the most powerful ingredients to maximize your harvests during the growth phase. With pH Perfect technology, you will never have to worry about pH again. Only experienced growers should venture into this product to bring their plants to their full genetic potential.