GMSgrowsanswered grow question 3 years ago In hydroponics which coco is a form of you follow ph for water growing. 5.5 to 6.0 for veg and 6.0 to 6.5 for flower. They can also be fed as soon as their born. Start low like 150 to 200 ppm. 03 to 0.4 ec. Don't go over 600ppm 1.2 ec with autos