I have my pH right going to try calmac for this deficiency please help am I making the right choice never had this problem before with the spots on the leaves please help
Ideally you need a bloom nutrient as your getting phosphorus problems. In veg in soil after a few weeks you use veg nutes and a bit of cal mag. In bloom you drop the veg nutes for bloom nutes and leave cal mag as it is or back it off a little.