How to Make Easy Bulk Substrate

Supplies List

  • 500 grams Coco Coir
  • 8 ½ cups fine Vermiculite
  • 1 cup of Gypsum
  • 21 cups of boiling water
  • 5-gallon bucket with lid

Instructions

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00:11 STEP 1:
First, add coco coir and vermiculite to the 5-gallon bucket.
01:11 STEP 2:
Next, boil 21 cups of water.
01:21 STEP 3:
After the water comes to a complete boil add 1 cup of gypsum. Let the water come back to a boil and then carefully pour into the 5-gallon bucket.
02:52 STEP 4:
Close with a lid and let sit for at least an hour and then mix. Let it sit to hydrate and cool for approximately 24 hours. Ideally, keep insulated to aid the pasteurization process.
05:31 STEP 5:
Once room temp, double-check to make sure it is at field capacity and mix in your colonized grain spawn.

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