SmokedSinse12
Active Member
I'm using bottled spring water which has a ppm of 50 before I add anything to it. The calmag instructions say to add 1tsp/gallon but I've read on some boards that I should keep adding calmag until my ppm reaches 250-300. Is that correct or do I risk burning my plants?
I'm growing in soil by the way.
I'm growing in soil by the way.