GMSgrowsanswered grow question 3 years ago At 1200 ppm in soil is a good place to be. Your ppm can be more than twice the amount that coco, peat, or water growing runs at. If your asking to switch to bloom notes, wait until you see button size buds forming before going to just your bloom nutes. A mix of half veg and half bloom is good in their transition to flower. Cheers