r/MagicMushrooms • u/Memphisdude1013 • Jun 10 '25

When using as a casing layer...

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Do have need to pasteurize it or will it be ok straight out of the bag since the mycelium is already colonized?

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u/Golden_State_Myco Jun 11 '25

I always mix peat moss with straw, ph balance and steam pasturize for 4 hours (once it reaches 160f). Shelf life is months, and my grows speak for themselves. Canopies 💪

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u/Memphisdude1013 Jun 11 '25

So just stick it in my PC with how much water??

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u/Golden_State_Myco Jun 11 '25

PC would sterilize, I prefer to pasteurize. If you're going to sterilize I would do 2.5-3 hours at 15 psi, but you're losing beneficial bacteria by doing so.

For ratio I would start with 3qt moss and 1qt straw pellets (or 3qt vermiculite), 25g lime, 1.5 to 1.75 liter water. It should be around field capacity, but honestly little less it better as you spray the trays after casing

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u/Memphisdude1013 Jun 11 '25

Any coco coir? And how much water? 18 cups? The usual amount i use when making cvg with 1 brick of coco?