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Shop: North Spore Bulk Substrate   MagicBag.co Certified Organic All-In-One Grow Bags

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Registered: 03/25/02
Posts: 316
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2 questions
    #589014 - 03/25/02 01:41 PM (22 years, 25 days ago)

1. would it be possible to sterilize everything you need sterlized by baking it? and if so at what temp?
2. Is there any way to just put your substare in something like a bred pan or a small rubbermaid container right away sterilize it then innoculate it, so you wouldn't have to use jars?



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Registered: 04/27/01
Posts: 23,480
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Re: 2 questions [Re: Skryllz]
    #589022 - 03/25/02 01:55 PM (22 years, 25 days ago)

Dry heat sterilization (baking) is possible, but requires more heat and longer times. Typical times and temps are 350F for 3.5 hrs. The reason this doesn't work for substrates is because the substrate would dry out during sterilization. Don't try this with anything that will melt. If you lack a pressure canner, check for the microwave tek for help.

Just another spore in the wind.

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Re: 2 questions [Re: Skryllz]
    #589023 - 03/25/02 01:57 PM (22 years, 25 days ago)

Moist heat is more effective at killing many microorganisms. When you bake, the actual
temperature of the substrate won't go above the boiling point of water until the water is
gone. This is the reason for using a pressure cooker, the boiling point of the water is
raised while under pressure so higher temps are possible with moist heat.

Edited by evolving (03/25/02 02:24 PM)

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