Good question and I don't know the answer. But plants that have been in the same soil for long enough that the lime is used up WILL need a supplement. That's why re-potting is important, and if you have a problem with low pH in a peaty soil, a calmag supplement might just be in order while you go run out and find a larger pot!
stinkyattic Reviewed by stinkyattic on . Botanicare Feeding Schedules? Hey everyone I know Pure Blend Pro Grow/Bloom are well-respected ferts so I picked some up (along with some Cal-Mag). I have to yet start using them, and in the meantime I'd like to find out what you all use for feeding schedules with these little guys. They'll be under 400w HPS in soil. I'm aware of the necessity to dilute the ferts, but by how much and at how many weeks/months in do you change it up? Thanks everyone. Rating: 5