Complete Refill Kit for Medium 44Q Monotub - Includes Grain Spawn & Bulk Substrate
Complete Refill Kit for Medium 44Q Monotub - Includes Grain Spawn & Bulk Substrate is backordered and will ship as soon as it is back in stock.
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Description
Description
The Medium 44Q Monotub Refill Kit restocks your 44-quart tub for another grow: a Premium 5-Grain spawn bag (2.25 lbs), 7.5 lbs of pasteurized Select Bulk Substrate, 6 new filter disks and a fresh black liner. Just add spores or liquid culture.
Made for the Grower's Select 44-quart tub from our Complete Medium 44Q kit.
- 1 bag5-grain spawn
- 7.5 lbsBulk substrate
- 6Filter disks
- NewBlack liner
- AddSpores or LC
Why growers restock with a refill kit
- Bundle pricing – Costs less than buying spawn, substrate, filters and a liner separately.
- Matched to the tub – Spawn and substrate amounts sized for a 44-quart monotub.
- Fresh filters and liner – New filter disks and a clean liner for every run.
- No sterilizing or mixing – Sterilized grain spawn and pasteurized, pre-hydrated substrate, ready to use.
What's in the kit
- 1 × Premium 5-Grain spawn bag (2.25 lbs)
- 7.5 lbs of Select Bulk Substrate, pasteurized and pre-hydrated
- 6 monotub filter disks
- Custom-fit black monotub liner
You provide: a spore or liquid culture syringe, and your 44-quart monotub with its incubation plugs. Need a tub? Get the Complete Medium 44Q kit.
How it works
- Inoculate the spawn. Wipe the injection port with alcohol and inject 5–7cc of spores or liquid culture into the spawn bag.
- Colonize the grain. Keep it at 72–76°F out of direct light. At about 25–30% colonization, break up and shake the grain, then let it finish until fully white.
- Spawn to bulk. Clean your tub and fit the new liner. Break up the colonized grain and mix it evenly with the bulk substrate, then level the surface.
- Colonize the tub. Seal the air holes and let the tub colonize, warm and undisturbed, until the surface is white.
- Fruit. Swap the plugs for the new filter disks, give the tub indirect light and mist the walls to keep humidity up.
Spawning to bulk: break up the grain and mix it through the substrate.
Specifications
| Specification | Detail |
|---|---|
| Fits | 44-quart monotub (18" × 15.5" × 12") |
| Grain spawn | 1 × Premium 5-Grain spawn bag (2.25 lbs) |
| Bulk substrate | 7.5 lbs, pasteurized Select Bulk Substrate (CVG) |
| Filter disks | 6 |
| Liner | Custom-fit black monotub liner |
| Inoculation | 5–7cc of spores or liquid culture |
| Incubation | 72–76°F |
Need a refresher? Our bulk monotub grow guide walks through each stage with photos.
Growing in a cool room?Add a Liquid Graphite Heating Mat under the tub for gentle, even heat during colonization.
FAQ
What do I need to add?
A spore or liquid culture syringe, plus your 44-quart monotub and its incubation plugs from your original kit.
Does it include vermiculite?
No. The refill kit covers spawn, substrate, filter disks and a liner. Add your own vermiculite if you like to case the surface.
Will it fit my tub?
It is sized for a 44-quart monotub like the Grower's Select tub in our Complete Medium 44Q kit.
How much spore solution or liquid culture should I use?
Inject 5–7cc of spores or liquid culture into the spawn bag.
What temperature does it need?
Keep the grain and the tub at 72–76°F while they colonize. In a cool room, a heating mat under the tub helps.
Should I reuse the old liner?
Swap in the new liner that comes in the kit. It keeps the tub clean between grows and cuts down on side pinning.
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