The pH Perfect Connoisseur Bloom A 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. If you already have the skills - pH Perfect Connoisseur has the power to make your plants reach their full genetic potential. Disclaimer: - pH Perfect Connoisseur is not for the grower who has been growing for less than 1 year - pH Perfect Connoisseur is not for the grower who has not dialed in their growing environment - pH Perfect Connoisseur is not for the grower who is struggling to get great results from other pH Perfect Base nutrients.