what is ca mg should i be adding it? i have some 14 day old baby's in ffof soil. i will be using the ff trio starting in a week or so the ph in my soil is a little low around 6.0 and my tap is around 5.0-5.5
Yes add cal mag. ca mg is short for calcium magnesium. Alot of soiless mediums dont have cal and mag so need to be added. some ferts have them in them but alot dont. Adding dolomite lime and epsom salt is one way to add cal and mag. You can also go to your local grow shop and purchase calmag made by GH or earthjuice.