blackdolphin
Active Member
I'm using Reverse Osmosis water and understand that this removes minerals such as calcium and magnesium from the water. That being said;
How much and how often should i use cal-mag to replace the calcium and magnesium that has been removed?
Quick note: I watered twice the first week of veg and the plants are already deficient of both.
How much and how often should i use cal-mag to replace the calcium and magnesium that has been removed?
Quick note: I watered twice the first week of veg and the plants are already deficient of both.