"PH PERFECT® CONNOISSEUR COCO GROW (PART B) Strictly for the Experts: The Only Ultra-Premium 2-Part Grow-Phase Base Nutrient Uniquely Formulated for Master Coco Coir Growers! If you’re already a top-notch grower who has already maxed out the potential of your current feeding program with your coco coir garden – and if, after all that success, you still want even more yield – then pH Perfect® Connoisseur Coco Grow, is for you.