Proportionally, I mix 5cups perlite to 3cups Ocean Forest and 2cups Happy Frog and give it all an extra 2TBL dolomite (pH buffer)... 'works like a charm
(though it does need an Mg supplement by the time flowering comes around).
https://www.rollitup.org/organics/222595-fox-farm-not-100-organic.html
i know it says that all of thier soils are organic. but as far as ive seen on the bag. nowhere does it say that its 100% organic. cant get it right now its in the dark. ive been told by more than one source that its not a completely organic soil. i had always just presumed that it was in the prep of a material to be added to the soil.
but hell. i could have been misinformed.