I found a recipe for preparing rockwool for first time use to enhance ph control, but specifics were not available. Could someone "fill in the gaps" with specific quantities and mixing/pre-soak advice, please.
Here are the ingredients:
To pre-treat rockwool for planting, soak it in a solution of fish emulsion,
trace mineral solution and phosphoresic acid (PH Down) for 24 hours, then rinse.
This will decrease the need for PH worries later on, as it buffers the rockwool
PH to be fairly neutural.