Master's Mix - Mushroom Fruiting Block - Bulk Substrate - Sterilized - (5 lbs.) - 0.2 Micron Filter - Grow Bag - Nutrients

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Bag Substrate
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Master's Mix Bulk Substrate

5 lb. Bag

100% Oak Pellets & Soy Hull Pellets

This Master's Mix can be inoculated directly via spores or liquid culture to produce mushrooms, or ideally used as a bulk fruiting substrate by mixing with an already colonized grow bag - providing more nutrients for faster and higher yields!  Additionally Master's Mix encourages a larger than average first flush allowing for a quicker turnover. This mix doesn't support ALL strains of mushrooms so it is important do your research before-hand and check if Master's Mix is ideal for your strain of choice.  A few that have proven to respond well to Master's Mix are Lion's Mane, Shiitake, and all varieties of Oyster mushrooms.

All bags are hydrated and sterilized via pressure cooker at 15 psi for 120 minutes and then shipped out within 12-24 hours. The bags are side-gusseted, extra thick (6 mil) and come equipped with a 0.2 micron breathable filter.

It is always best to use your grow bags ASAP. If you are unable to use right away, they should be used within 7 days. If you need to wait longer than 7 days I recommend you refrigerate them until you are ready.

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Most orders are typically processed and shipped within 1-3 days of payment receipt; or 3-5 days for orders that include fruiting chambers, monotubs, or full grow kits.   Occasional product backorder may delay your order for a few extra days. We will do our best to inform you if your order is expected to be delayed longer than 3-4 days. Transit time depends on the delivery method chosen during checkout. While we offer UPS Next Day Air, 2nd Day Air, and 3 Day Select shipping options, this does not guarantee your order will arrive the day after or two days after it is placed. We place orders with express shipping on priority fulfillment and do everything possible to ship them as soon as possible, usually with same day service. UPS express shipping options do not provide Saturday delivery, so orders placed for Next Day or 2nd Day service on Thursday or Friday may not make delivery until the following Monday. Orders with subtotals of over $200 will be shipped with signature required.

We offer a sterility guarantee on substrates 14 days after purchase.   A 10% restocking fee will be charged on all returned items.  Items must be in original unused condition. No returns without written authorization. No returns after 7 days.  Shipping charges are not refundable.  Liquid culture products are sold with cleanliness and viability guarantee, should you find your cultures to be unviable or contaminated please contact us and we will make arrangements for replacement.
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Master's Mix - Mushroom Fruiting Block - Bulk Substrate - Sterilized - (5 lbs.) - 0.2 Micron Filter - Grow Bag - Nutrients
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