How To Use Progressive Web App aka PWA On 420 Magazine Forum
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Here's how I do it: Cubic Foot = 7.5 gallons of soil mix add to that:
Acadian Kelp Meal @ 1/2 Cup per cubic foot
Neem Cake and Karanja Cake 50/50 Mix @ 1/2 to 1 cup per cubic foot
Crustacean Meal @ 1/2 Cup per cubic foot
Malted Barley @ 1 Cup Per Cubic Foot (ground fine in a coffee grinder)
Gypsum Dust @ 1 Cup Per Cubic Foot
Brix Blend Basalt @ 1 Cup Per Cubic Foot
Glacial Rock Dust @ 1 Cup Per Cubic Foot
Oyster Flour @ 1 Cup Per Cubic Foot
Mix with:
Quart of EWC (can be as much as 25% of the humus portion)
EWC = earth worm casting
1/3 humus = Compost/EWC/Vermicompost
1/3 aeration = Rice hulls or Perl-lite
1/3 CSPM = Canadian Spagnum Peat Moss (look on bag for country of origin = Canada)
Amend at up pot with 1 cup of the amendment mix and 1 cup EWC then into flower.
This is the soil mix I use - "Coots Mix" as it were. I thank Clackamas Coots for this soil recipe. Can stand behind, on top and in the can with this mix. Can go no-til for several rounds without needing to change it out. Amend at up pot, water FTW. All you need.
Substitute like you're baking a cake ... not really many subs for the above. It's a balanced soil mix. I get this soil mix tested at our state Extension Service every time we mix a batch and it's damn near perfect every time.