I seek wisdom. I have been using a 9:4 ratio of bagged soil:#4 perlite. If I am going to replace perlite with "5/16 clean red" lava rock, does my ratio need to be fine tuned?
as in, 1:1 substitution ratio perlite:lava rock?
thanks.
is it true? is tom banned?
Vermifire love it or hate???? Looking for totes or soil by the yard in southern mendo or sonoma county to fill a few 400s. Not sure where to turn. Any advice is greatly appreciated.