Robertsanswered grow question 3 years ago Looks like it was given strong nutrition too soon and the substrate ph is not correct, is why it is not growing. Soil needs to be slightly acidic for cannabis so it can properly absorb nutrients. .1 is a big change in a plant ph. Soil you should have a run off of 6.5 at minimum. Soil less or coco 5.8 is a great vegging ph. Use a calibrated ph tool. Ph is very important for everything to work right