Monotubs for Mushroom Growing | Bulk Fruiting Chambers – Midwest Grow Kits

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mushroom monotub with filter disks

Monotubs

(8 products)

A monotub is the most popular fruiting chamber in modern mushroom cultivation — a sealed tub with filtered air holes that creates the humid, oxygenated environment mushrooms need to produce big flushes. Our Growers Select monotubs take the guesswork and the drilling out of the equation: every tub is custom-molded with air holes already in the perfect positions, so you can spawn and fruit right out of the box.

These aren't repurposed storage totes. Our tubs are custom-designed and injection-molded from durable polypropylene, engineered specifically for mushroom growing. They support up to 200 pounds on top, stack with built-in anti-slide notches, and ship complete with monotub filter disks, incubation plugs, and a custom-fit liner.

Available in three sizes — 28Q small, 44Q medium, and 66Q large — plus multi-packs and wholesale lots.

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  • Monotub Fruiting ChambersCustom-molded 28Q, 44Q and 66Q tubs with air holes pre-placed — plus multi-packs and the Max Yield Bin. No drilling.
  • Monotub Grow KitsComplete kits with the tub, grain spawn and bulk substrate together — everything you need to grow in one box.
  • Monotub Refill KitsFresh grain spawn and bulk substrate sized to your tub, so you can run grow after grow at a lower cost.
  • Filter Disks, Liners & PartsAdhesive filter disks, pre-cut liners, replacement lids, clips and hole plugs — the consumables that keep a tub running grow after grow.

New to the method? A monotub is a sealed tub with filtered air holes that creates the humid, oxygenated environment mushrooms need for big flushes. Load colonized grain spawn mixed with bulk substrate, seal it, and fruit — our step-by-step monotub grow guide walks you through every step. For a complete setup with spawn and substrate included, see monotub grow kits.

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