Nutrient pH for marijuana on rockwool


#1

What’s a good pH for a hydroponic solution on pre-conditioned Rockwool?

Soaking rockwool in a looped solution as a pre-conditioning measure is really only temporary. The “mask” wears off within a few weeks, and the naturally high (alkaline) pH of the rockwool comes back. To prevent this, adjust the nutrient-water solution to a pH of around 6.0 to 6.1

Robert