- Custom designed Monotub (22.5"x15.5"x12" - 66Q size)
- Two (2) 5-grain Spawn Bags
- 10 Pounds of Select Bulk Casing mix (pre-mixed and pasteurized)
- One (1) Quart of Vermiculite
- Six (6) Monotub Filter Disks
- One (1) Black Monotub Liner
- One (1) 8oz Spray Mister
- Six (6) Monotub Incubating Hole Plugs
- Step-by-Step Bulk Growing Guide
Midwest Grow Kits Complete Large 66Q Monotub Bulk Spawn Growing & Casing Kit
starting from 0% interest financing from
/mo.
- 66-quart capacity holds 10 lbs of substrate for high-volume bulk production
- Precision-engineered airflow system uses six washable filter disks for gas exchange
- Includes two 5-grain spawn bags and 10 lbs of pre-pasteurized bulk casing material
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Who This Is For
- You are upgrading to a bulk monotub because your jar-based harvest cycles cannot keep up with your biomass needs.
- You are switching to this 66Q system because your smaller tubs lack the headroom for your crop to reach full size.
- You are moving to pre-pasteurized substrate because DIY sterilization often leads to contamination and crop loss.
What We Found
- The 66-quart size is the sweet spot where you get industrial yields without needing a dedicated room for the gear.
- We noticed the adhesive on these filter disks stays tacky much longer than the cheap foam plugs found in DIY kits.
- Using the liner is not optional if you want a clean harvest that does not stick to the plastic walls of the tub.
What Users Say
- Growers who moved up from jars say they finally stopped spending every weekend sterilizing small batches of material.
- Buyers report that the pre-pasteurized bags saved them from the mess of boiling and prepping their own bulk material.
- Users who switched to this tub say the filtered airflow eliminated the constant need to manually fan their crop.
Midwest Grow Kits Complete Large 66Q Monotub Bulk Spawn Growing & Casing Kit
Ready to take your mushroom cultivation to the next level and achieve massive yields? The Midwest Grow Kits Complete Large 66Q Monotub Kit is your all-in-one solution for successful bulk cultivation, removing the complexity and guesswork from large-scale growing.
This comprehensive system is the premier large-scale option in the Midwest Grow Kits lineup, designed for both beginners ready to move beyond jars and experienced cultivators seeking to maximize production. It features a spacious 22.5"x15.5"x12" custom-designed monotub with precision-engineered airflow and humidity controls. Significantly larger than the 44Q version, this kit provides ample space for impressive harvests.
The kit includes two 5-grain spawn bags for robust mycelium development and 10 pounds of premium, pre-pasteurized Select Bulk Substrate, ready for immediate use. Simply inject your chosen spores or liquid culture, allow for colonization, and mix with the substrate. The included vermiculite casing layer and black liner create the perfect microclimate for optimal fruiting while preventing side pinning. When you're ready for another cycle, the Complete Large 66Q Refill Kit makes it easy to start again.
What's Included
Features
🍄
High-Capacity Monotub
A massive 66-quart growing chamber engineered for maximum yields and efficient use of space.
🌱
Dual Spawn System
Includes two pre-sterilized 5-grain spawn bags for rapid, vigorous, and widespread colonization.
🧱
Premium Bulk Substrate
10 lbs of pre-pasteurized substrate perfectly formulated for dung-loving mushroom species.
💨
Advanced Climate Control
Complete with filter disks, hole plugs, and a mister to maintain the ideal microclimate for fruiting.
Growing Process
This kit is the perfect next step for growers who have mastered jar cultivation. The bulk growing process is simple:
- Inject 5cc of your preferred spore syringe or liquid culture into each spawn bag.
- Allow the spawn bags to fully colonize with mycelium (typically 2-3 weeks).
- Break up the colonized spawn and mix thoroughly with the Select Bulk casing mix in the monotub.
- Apply the vermiculite casing layer to create ideal surface conditions for pinning.
- Install the filter disks during the fruiting phase to maintain proper fresh air exchange.
- Use the included mister to maintain optimal surface moisture as your mushrooms grow.
The 66-quart capacity significantly increases potential yields compared to smaller mushroom grow kits, making it ideal for maximizing production efficiency.
Specifications
| Specification | Value |
|---|---|
| Monotub Dimensions | 22.5" x 15.5" x 12" |
| Monotub Capacity | 66 quarts |
| Spawn Bags | 2x 5-grain, pre-sterilized |
| Substrate Weight | 10 pounds |
| Vermiculite Amount | 1 Quart |
| Filter Disks | 6 |
| Incubating Hole Plugs | 6 |
| Spray Mister Capacity | 8 oz |
| Recommended Culture | 5cc per spawn bag (not included) |
FAQs
What else do I need to start growing?
This kit contains all the core components for bulk cultivation. You will only need to provide your own mushroom spores or liquid culture in a syringe to inoculate the spawn bags. Everything else is included!
Is this kit good for beginners?
Yes, this kit is an excellent choice for ambitious beginners looking to start with a large setup or for intermediate growers upgrading from smaller kits. It simplifies the bulk growing process by providing pre-sterilized and pre-pasteurized materials, which significantly reduces the risk of contamination.
How is this different from the 44Q kit?
The primary difference is size and yield potential. This 66-quart monotub offers over 50% more cultivation space than the Midwest Grow Kits 44Q Monotub Kit, allowing for significantly larger harvests in a single run.
What kind of mushrooms can I grow with this kit?
The Select Bulk Substrate is specifically formulated to be an ideal growing medium for most dung-loving mushroom species.
Can I reuse the monotub for future grows?
Absolutely! The monotub is durable and can be cleaned, sanitized, and reused for many grows. When you're ready for your next batch, we offer a convenient 66Q Monotub Refill Kit that includes fresh spawn bags and substrate.
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Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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