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Boomr Bag Monotub Refill Kit










Species | Dung-loving mushrooms |
Grow your own dung-loving edible or medicinal mushrooms indoors!
Our Boomr Bag Monotub Refill Kit includes everything you need for a successful monotub grow. (All that's required is a spore syringe or liquid culture!) The manure-based sterile substrates, injection port bag, and coco coir provide mediums for colonization, incubation, and growth. We've also included self-adhesive filters, designed to keep out foreign spores and other contaminants while maintaining proper humidity, airflow, and gas exchange.
Each Boomr Bin refill kit includes:
- (3) Boomr Bag Sterile Manure Substrate (5 lbs each)
- (1) Organic Sterilized Grain Bag with Injection Port (3 lbs)
- (2) Sheets of 1" & 2" self-adhesive filters
- (1) Coco Coir casing layer (2 lbs)
Each Max Yield Bin refill kit includes:
- (3) Boomr Bag Sterile Manure Substrate (5 lbs each)
- (1) Organic Sterilized Grain Bag with Injection Port (3 lbs)
- (2) Sheets of 2" self-adhesive filters
- (1) Coco Coir casing layer (2 lbs)
- (1) Roll of 1/2" black micropore tape (10 yards)
Spawn to bulk ratio:
We recommended mixing 1 colonized grain spawn bag with 2-3 Boomr Bags. (Higher inoculation rates may improve your success.)
IMPORTANT: Coco coir should only be added once monotub is fully colonized and pins begin to form. Only a thin layer of coco coir (approx. 1/2 inch) is necessary.
For more detailed information on items included in the refill bundle, click the links below.
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Our best-selling Boomr Bag is a sterile bulk mushroom substrate formulated by mycologists to maximize your mushroom yield. It features a proprietary blend of composted horse manure, coco coir, and several quality substrate supplements (although we keep the exact blend a secret!) Over several years, it has been perfected for dung-loving mushroom species and is widely-trusted by mushroom growers. Each bag weighs 5 pounds. (Note: Bags are hydrated to field capacity.)
Use Boomr Bag in monotubs, filter bags, and outdoor beds. Or, grow mushrooms from the bag or tray in a humidity-controlled grow room or Martha set up.
Spawn to bulk ratio:
We recommended mixing 1 colonized grain spawn bag with 2-3 Boomr Bags. (Higher inoculation rates may improve your success.)
Best practices:
- We recommend clean hands, latex or nitrile gloves, and sterile technique when using Wood Lovr to reduce the introduction of contaminants.
- Be sure to mix colonized grain spawn thoroughly into your substrate.
- It is best practice to wait a minimum of 1 week after arrival before using sterile substrates to ensure they were not compromised during transit. Rest assured that your purchase is 100% guaranteed. If your substrate was compromised, we will replace it.
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Our sterile grain bag with injection port was formulated by mycologists to maximize the speed and size of your mushroom grow. Each spawn bag contains 3 lbs of our proprietary blend featuring hydrated, nutrient-rich organic millet and wheat berries. Bags also include a self-healing injection port for use with a spore or culture syringe plus a 0.2 micron filter patch to block airborne contaminants while providing even gas exchange. Bag weighs 3 pounds. (Note: Bags are hydrated to field capacity.)
Spawn to bulk ratio:
We recommended mixing 1 colonized grain spawn bag with 2-3 Boomr Bags. (Higher inoculation rates may improve your success.)
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IMPORTANT: Coco coir should only be added once monotub is fully colonized and pins begin to form. Only a thin layer of coco coir (1/4 to 1/2 inch) is necessary.
Coco coir provides many benefits to the mushroom cultivation process. In addition to moisture retention, the porous structure of coir material enables good exchange of air and water and is highly resistant to contaminants making it ideal for mushroom growing. It is often used as casing, added to substrates, and is even used in garden beds as an alternative to peat moss.
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These self-adhesive filters are made from 100% recycled filter material and sized to fit over 2" holes on monotubs. Use these in place of polyfill to keep out foreign spores and other contaminants while maintaining humidity and air exchange. Each sheet contains 6 filters. (Use on 2" holes found on the lid of the monotub.)
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This latex-free, hypoallergenic paper micropore tape adheres well and leaves minimal adhesive residue upon removal. It's designed to keep humidity in and allow for proper air exchange, and its black color will make it nearly invisible to the eye one applied. Each roll measures 10 yards. (Use on small holes around the base of the monotub.)
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North Spore promotes the use of its products for lawful purposes only. North Spore does not encourage the procurement, use or growing of any illegal substance. North Spore does not condone, encourage, facilitate, solicit, or promote any illegal activity. Certain substances are illegal under state and federal laws, and it is the consumer’s responsibility to be informed about the legal status of any substance the consumer grows, procures, or uses.
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Solid Product
This is a little bit pricey, but the convenience is unmatched. The refill kit takes a ton of the prep time and guesswork out of my mushroom grows.
North Spore
Thanks for sharing, Josh! The team is here to help if you ever need anything.

More than i expected
Everything was very fluid in my experience. Each step went exactly as described it would. My fruiting was out of control! Repeat customer here.
North Spore
Thanks for sharing, Geromy! We really appreciate your support!

Fantastic product
I’ve bought this a couple times before and plan to use again: super convenient and easy to use
North Spore
We're so glad everything is working out for you, Mitchell! Our team is here if you need anything!

Perfect for my monotub
I love how this is an option to buy all ingredients for my monotub. Super easy.
North Spore
Thanks for the great review, Joey! Please reach out if you ever need anything.

Amazing Results
Fantastic Product Thank You North Spore Amazing Service You have help me to Heal me With infinite Gratitude and Love ❤️

Easy to Use, Great Results!
Literally everything I needed to get my monotub setup and going (just needed the plastic tub). Easy to use and very straightforward. I love the detailed video they have as well to help support with setup!
North Spore
We're so glad you're enjoying the experience, Michael! Thanks for the great review.

Great stuff
I used the refill on my own mono tub and had beautiful results
North Spore
Thanks so much, Kaleb! We really appreciate the kind review. The team is here to help if you ever need anything.

Great
The products work great.
North Spore
Thanks for sharing, Jasen! If you need help with anything, please reach out.

Customer service
My monotube bin was cracked during shipping. North Spore emailed me asking if everything arrived OK. I replied and sent a picture of the bin. They replaced it! Excellent customer service!! Products are also amazing 100% recommend!
North Spore
Thanks for the great review, Dustin! We really appreciate your support.

Fantastic Deal!
Comes with everything you need to get a fresh batch going, with enough to carry over to another grow if you’re doing smaller batches. Will be stocking up on a few orders this fall for growing culinary mushrooms indoors.