Midwest Grow Kits Complete Large 66Q Monotub Refill Kit
Ready to start your next cultivation cycle without purchasing an entire new setup?
The Midwest Grow Kits Complete Large 66Q Monotub Refill Kit provides all essential components to revitalize your existing monotub setup with maximum efficiency and cost savings.
Perfect for experienced growers looking to maintain continuous cultivation cycles without the expense of purchasing a complete new system.
This comprehensive refill package includes two premium 5-grain spawn bags ready for inoculation with your preferred spore syringe or liquid culture. Once colonized, simply mix with the included 10 pounds of pre-pasteurized Select Bulk Substrate - specially formulated to encourage vigorous mycelium growth and abundant fruiting.
The kit also features six replacement monotub filter disks that maintain optimal airflow and humidity levels while providing protection against airborne contaminants. The custom-fit black monotub liner helps retain proper moisture levels, promotes even colonization across your substrate, and significantly simplifies the cleanup process after harvesting.
By choosing this comprehensive refill kit instead of purchasing individual components separately, you'll enjoy substantial cost savings while keeping all your essential supplies conveniently bundled in one package.
Product Highlights
- Complete refill solution for large 66Q monotubs with all critical components included
- Dual 5-grain spawn bag system for accelerated colonization and increased yields
- 10 pounds of nutrient-rich, pre-pasteurized bulk substrate for optimal growing conditions
- Six replacement filter disks to maintain ideal growing environment
- Custom-fit black monotub liner for moisture retention and simplified cleanup
Midwest Grow Kits Complete Large 66Q Monotub Refill Kit Features
Dual Spawn System
Two sterilized 5-grain spawn bags provide double the colonization potential for faster development and significantly increased yields.
Premium Bulk Substrate
10 pounds of pre-mixed, pasteurized substrate in two convenient 5-pound bags, formulated specifically for vigorous growth.
Replacement Filter Disks
Six fresh filter disks maintain perfect gas exchange while providing essential protection against airborne contaminants.

Custom-Fit Liner
Precision-cut black liner prevents side-pinning, maintains ideal moisture levels, and makes post-harvest cleanup significantly easier.
Midwest Grow Kits Complete Large 66Q Monotub Refill Kit What's In The Box
- 2 5-Grain Spawn Bags
- 10 Pounds of Select Bulk Substrate (two 5lb bags, pre-mixed and pasteurized)
- 6 Monotub Filter Disks
- Custom-Fit Black Monotub Liner
Section 4: Usage Information
Midwest Grow Kits Complete Large 66Q Monotub Refill Kit Usage Information
This refill kit is designed for growers who already have a large 66Q monotub setup and need to refresh their growing supplies. The process is straightforward:
1. Clean and sanitize your existing monotub thoroughly before starting a new cultivation cycle
2. Inject 5cc of your preferred spore syringe or liquid culture into each of the provided 5-grain spawn bags
3. Allow the spawn bags to fully colonize with mycelium (typically 2-3 weeks in optimal conditions)
4. Break up the colonized spawn and mix thoroughly with the Select Bulk substrate in your monotub
5. Install the fresh filter disks and liner in your monotub to create optimal growing conditions
6. Maintain proper temperature, humidity, and light conditions according to your specific cultivation requirements
By using this complete refill kit, you'll save time and money compared to purchasing individual components separately, while ensuring all materials are perfectly compatible with your large 66Q monotub system.
Midwest Grow Kits Complete Large 66Q Monotub Refill Kit Specifications
Specification | Value |
---|
Compatible With | Large 66Q Monotub |
Spawn Bags | 2 5-grain, pre-sterilized |
Substrate Weight | 10 pounds (two 5lb bags) |
Substrate Type | Pre-mixed, pasteurized Select Bulk |
Filter Disks Included | 6 |
Liner Type | Custom-fit black monotub liner |
Recommended Culture Amount | 5cc per spawn bag (not included) |