---
product_id: 296323328
title: "TonGass 60-Pack Large 8\"x5\"x20\" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags"
brand: "tongass"
price: "€ 96.08"
currency: EUR
in_stock: true
reviews_count: 5
url: https://www.desertcart.hr/products/296323328-tongass-60-pack-large-8x5x20-autoclavable-mushroom-grow-bags-bulk
store_origin: HR
region: Croatia
---

# Generous 8"x5"x20" size Autoclavable up to high temps Extra thick 80 micron plastic TonGass 60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags

**Brand:** tongass
**Price:** € 96.08
**Availability:** ✅ In Stock

## Summary

> 🍄 Grow Big, Grow Clean, Grow Bold!

## Quick Answers

- **What is this?** TonGass 60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags by tongass
- **How much does it cost?** € 96.08 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/296323328-tongass-60-pack-large-8x5x20-autoclavable-mushroom-grow-bags-bulk)

## Best For

- tongass enthusiasts

## Why This Product

- Trusted tongass brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Durable 80 micron thick plastic resists tears and punctures during handling.
- • **Bulk Value Boost:** 60 bags in one pack means serious scale-up power for your mycology projects.
- • **Breathe Easy Filter:** 0.2 micron microporous patch ensures optimal gas exchange without contaminants.
- • **Spacious Growth Zone:** Large 8"x5"x20" dimensions maximize your mushroom yield potential.
- • **Sterilize Like a Pro:** Autoclavable bags withstand intense heat for contamination-free growth.

## Overview

The TonGass 60-Pack Large Mushroom Grow Bags feature autoclavable, extra-thick 80 micron plastic with microporous 0.2 micron filter patches, providing a spacious 8"x5"x20" environment ideal for contamination-free mushroom cultivation at scale.

## Description

60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags

## Features

- Autoclavable Mushroom Bags: These bags are designed to withstand high temperatures for sterilizing the substrate.
- Large Size: The 8" x 5" x 20" size saves space while providing enough room for growing mushrooms.
- Durable and Tear-Resistant: Thick 6mm plastic bags are stronger and more durable than average mushroom grow bags.
- Effective Filter Patches: The 0.2 micron filter patches allow gas exchange without letting contaminants in.
- Value-Pack: Get 60 bags for the same price, allowing you to grow or spawn mushrooms like a pro.

## Product Details

- **Material:** Plastic, Polycarbonate (PC), Polyethylene (PE)
- **Color:** Clear
- **Special Feature:** Durable
- **Style:** Modern
- **Planter Form:** Bag

## Images

![TonGass 60-Pack Large 8"x5"x20" Autoclavable Mushroom Grow Bags Bulk with Microporous Filter Patchs, Extra Thick 80 Micron (=3 Mil), Mushroom Cultivation Spawn Supply Myco Bag Bulk Substrate Bags - Image 1](https://m.media-amazon.com/images/I/81TtVGq+4CL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Your listing says the bags are 6mm thick. That's almost a quarter of an inch. Is that really the thickness?**
A: Hello, the thickness is 80 microns （ca. 0.0031496 inchs） by contacting the supplier. We have re-edited the data and it will be updated in about 15 minutes. Thank you very much for your understanding and Suggestions.

**Q: How much spawn does each bag hold in pounds of spawn?**
A: For bags of this size, typically 5-8, but the plastic is thick so it may be able to hold more weight at your own risk.

**Q: how many pound bag is this?**
A: they weigh like 16g

**Q: Why don’t these bags have injection ports?**
A: because the manufacturer did not install injection ports.
you dont need an injection port anyways.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great bag that can withstand high heat!
*by O***E on April 23, 2025*

worked as intended, did not melt or burn inside the pressure cooker for 3.5 hours. I highly recommend if you;re growing mushrooms, sterilizing anything. Plus there were 66 bags in the package! Which is a bonus.highly recommend to mycologists enthusiasts, it's a solid bag. Comes with the white filter only. If you need to inject anything in it you need to puncture the bag and then tape it. Or you can buy the self healing sticker.Highly recommend it!

### ⭐⭐⭐⭐⭐ Great for doing grain AND building substrate blocks
*by J***R on November 5, 2024*

The media could not be loaded. This is my second order of these bags in year 2024 and the only complaint I might have is a few of them have not been pressed correctly at the bottom making it a little more challenging to get the sides lined up after filling with grain or substrate.I started my shrooming journey in 2023. Over time I perfected my liquid culture, grain spawn and substrate process. Over that time, I used up and threw away a lot of these bags, not because they were bad, but my process was not good.My process now is to bail my oat grain for 30 minutes, let it cool and dry enough to pass the tissue test. Then I bag up about 2 cups of that grain into each bag, line up the sides, roll the top down tightly until I get to the air patch, rubber band my little bundle and stick it in the Insta-pot. I let my bags run through the insta pot process on high for 1.5 hours, let the pressure fall and then carefully bring the bags out, pop off the rubber bands, unroll my bag of grain, put a heavy duty clip at the top where I folded up before the PC process and periodically shake my bags until all the moisture has absorbed back into the grain.I use two processes to make my bags of spawn. I use LC or grain to grain. If I use the LC, after I shoot the bag with 4-5 cc (my preference), I slap a piece of micro tape over the hole the needle made and then hang the bag by the large office clip at the top. If it's just grain to grain, I carefully unroll the top, toss so already inoculated grain spawn in, roll the top back down to the filter, put my clip on and hang the bag on a hook until it's ready.I then use that same bag for adding my substrate since I use a combo of pellets 1.12#, cotton seed husks 8 oz and 1/3 c wheat bran with just a little less than 1TBSP of lime for pasteurizing.From start to finish, this process of having a block ready to fruit takes about a month, 2 weeks for the spawn and then about 2 weeks for it to run through my substrate mix.Through all this process as described, I've never had a bag fail me. They don't melt in the Insta pot, they don't burst, they don't crinkle so horribly that they look like a mangled mess of plastic, and as I said at the beginning, this is my second time to order this brand. Unless they change materials or their process, these will continue to be my go to bags and I highly recommend them, especially for the cost per bag.

### ⭐⭐⭐⭐⭐ Work Great if Used Correctly
*by D***K on January 16, 2022*

These mushroom bags work great but they will burst in the PC if proper precautions are not taken.First, they cannot come into contact with the bottom or sides of your pressure cooker (PC). The PC will get very hot and it will melt the plastic. I place metal canning rings under the canning rack and then drape cloth over the rim of the PC arranged so that the interior is completely lined with cloth. Then I load the bags and then fold the cloth over top of the bags to clear the rim of the PC once loaded.Second, you cannot have any air in your bags or they will pop. The air expands under pressure — a lot! — and the filter patch does not provide enough ventilation to allow excess air to escape. The bags will then pop, and you will probably hear it. There are a couple of ways to prevent this. One is to not seal the bags until after they are PCed. This does complicate sealing the bags because the PC will wrinkle and distort the plastic. It is also not foolproof because if the bags are rolled tightly closed as per common practice then they could burst anyway.The safest way to prevent air from bursting your bags is to just not have any. Push all the excess air out of the bag so they look like they are vacuum sealed (which btw is impossible with these bags because of the filter patch). . Once all the air is out of the bag you can seal them and PC or else PC first as per your preference. I personally like to seal the bags before pressure cooking because they seal better, and I can verify that the excess air is fully removed before they go into the PC. If the air is not removed then you will observe a noticeable pillow of air inside when you try to roll them up. I seal my bags as close to the top as possible so that if necessary I can open the seal, remove the excess air, and still have enough head room to reseal the bag.If you follow these precautions then you can avoid bursting your bags on the regular.

## Frequently Bought Together

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-01-23*