If you are weighing Martha Tent Kit vs monotub kit options, you are really choosing between two different ways to fruit: the Mushroom Monotub Large 66Q Grow Kit and the North Spore BoomRoom II Automated Mushroom Grow. One is a self contained 66Q tub built around a single bulk batch, while the other is a tall automated tent with shelving for many blocks, trays and jars at once. Your decision comes down to batch size, hands on time, and how much vertical space you can dedicate to your grow.
You want a clear verdict without guesswork. We assessed both listings side by side for capacity, climate control, kit completeness, and daily upkeep so you can match the system to your routine. The MycoLabs option earns strong feedback at 4.6 out of 5 from 295 reviews for its all in approach, while the NorthSporeMushrooms tent holds 4.1 out of 5 from 12 reviews as the higher-end pick for automation. You can also browse our Monotubs, Martha Tents & Fruiting Chambers hub to see how these styles fit with other fruiting setups.
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Quick Picks at a Glance
Prime MycoLabs 66Q Mushroom Monotub Grow Kit Complete
Prime North Spore BoomRoom II Automated Mushroom Grow
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Pros
- Truly complete kit so you do not need to source tub, substrate, filters or casing separately
- Strong humidity retention and stable airflow praised for reliable colonization
- Large 66 quart capacity supports generous yields in a single run
- Quality sterilized components backed by responsive customer support
Cons
- Spore syringe or liquid culture is not included and must be purchased separately
- Occasional reports of grain bags arriving too dry which can waste inoculant
- Large tabletop footprint needs dedicated indoor space and works best with a separate heat mat
The MycoLabs Large 66Q Monotub Grow Kit is a complete indoor system for growing dung loving edible and medicinal mushrooms. It is designed for beginners and hobby growers who want to start quickly without building a tub or sourcing materials.
Standout features include two sterilized multi grain bags with injection ports, 10 pounds of bulk substrate and a vermiculite casing layer. In real world use, the balanced spawn to bulk ratio promotes even colonization and the filters plus plugs help maintain steady humidity and fresh air exchange.
Build quality centers on a sturdy 22.5 by 15.5 by 12 inch black polypropylene tub with pre cut airflow holes. Included filter disks, black incubation plugs, liner and ultra fine mister give precise control over moisture and cleanliness during incubation and fruiting.
Drawbacks are minor but worth noting. You must supply your own spores or liquid culture, and a seedling heat mat is often helpful but not included. A few users reported dry grain bags, and the large size requires dedicated tabletop space.
Overall, this is a professional grade, beginner friendly kit that delivers convenience, consistency and strong growing conditions. If you want a ready to use monotub with proven components and support, it is an excellent choice.
Capacity is 66 quarts with dimensions of 22.5 inches long by 15.5 inches wide by 12 inches high. The rectangular tabletop tub is made from durable black polypropylene with aeration focused airflow design.
Included are one Growers Select monotub bin, two 5 pound bags of bulk substrate, two 2.25 pound sterilized grain bags with injection ports, plus vermiculite casing, filter disks, plugs, mister and liner.
Designed for indoor fungus cultivation with humidity and contamination control features. Spore syringe or liquid culture and optional heating accessories are not included.
Pros
- True plug and play automation eliminates constant hand misting and fanning
- Vertical 5 shelf layout maximizes yield per square foot in a small footprint
- Clear vinyl walls make it easy to monitor pins, canopies and harvest timing
- Built in spore containment and runoff tray for cleaner indoor growing
- Purpose built for mycology with balanced airflow, humidity and spacing
Cons
- Large 18 cubic foot tent still needs dedicated floor space plus power and ventilation
- Clear vinyl interior requires regular cleaning to prevent fog residue and buildup
- Beginners may need time to dial in humidity and FAE settings for different varieties
The North Spore BoomRoom II is a fully automated 5-rack Martha tent designed to replace messy monotubs with a controlled indoor biosphere. It is built for culinary growers, hobby mycologists and anyone ready to move from manual misting to consistent, high yield fruiting.
Standout performance comes from the paired Myco-Mister II and FAE fan system. The mister holds humidity at 90 percent plus for strong pinning, while the fan exhausts CO2 to encourage thicker stems, larger caps and fewer aborts across flushes.
The design uses a sturdy metal frame with ultra clear heavy duty vinyl and five reinforced racks offering 18 cubic feet of vertical growing space. A negative pressure layout with filtration plus a Spore Floor tray helps contain spores and catch runoff for cleaner home use.
There are tradeoffs to consider. You will need a dedicated corner with power and ventilation, and the vinyl interior requires regular wiping to stay clear. Beginners may also need a few cycles to dial in placement and airflow for their specific varieties.
Overall, the BoomRoom II is a serious upgrade for growers who want automation, scale and visibility in one system. If you want dense canopies without daily fanning and spraying, this purpose built tent is an excellent long term investment.
How They Compare
We reviewed the included components, stated dimensions, and climate features from each listing to see where they overlap and where they pull apart. The differences are practical, not cosmetic, and they affect how often you mist, how many projects you can run, and how much cleaning you take on. Use the axes below to match your space and growing habits.
Growing Space and Batch Style
The Mushroom Monotub Large 66Q Grow Kit centers on a Large 66Q Grower’s Select Monotub bin that measures 22.5” L x 15.5” W x 12” H, designed to hold a 3 inch layer made from two 2.25lb grain bags mixed with bulk substrate. The North Spore BoomRoom II Automated Mushroom Grow takes the opposite approach with 5 reinforced racks inside 18 cubic feet of growing space, so you can stack trays, blocks and jars vertically instead of spreading tubs across the floor. If you picture one focused bulk run, the tub makes sense, while the tent suits several concurrent projects.
That batch style shapes what you can grow well. The Mushroom Monotub Large 66Q Grow Kit is built for dung loving mushrooms and gives you a contained bed that holds humidity around the substrate, which is simple to manage for a single variety at a time. The North Spore BoomRoom II Automated Mushroom Grow is described as a monotub alternative that can hold up to 9x more mushrooms than a standard tub setup by going vertical, which helps if you want oysters, lion’s mane and medicinal varieties side by side. Learn how tub style fruiting works for gourmets in our how to use a monotub for oyster mushrooms before you commit to a single batch format.
Humidity, Airflow and In-depth Control
The Mushroom Monotub Large 66Q Grow Kit relies on passive airflow plus manual care, with airflow and humidity controls on the tub, six 2.5” self-adhesive filter disks, six incubating plugs, and an 8oz Ultra Fine Spray Mister for hydration during fruiting. The North Spore BoomRoom II Automated Mushroom Grow pairs an integrated Myco-Mister II with an FAE Fan to hold relative humidity pinned at 90% plus while stripping CO2, which is meant to support thicker stipes, larger caps and fewer aborts. In short, you trade hands on misting and plug management for plugged in humidity and fresh air exchange.
Your daily routine will feel very different. With the Mushroom Monotub Large 66Q Grow Kit you will check surface moisture, mist the vermiculite casing layer once pinning starts, and adjust plugs and filters to balance gas exchange and humidity. With the North Spore BoomRoom II Automated Mushroom Grow you will monitor the mister reservoir, wipe condensation from the clear vinyl, and keep the fan path clear, with less fanning but more equipment to keep clean. If you grow moisture hungry species that demand steady humidity, see our best martha tent for Lion’s mane mushrooms for why stable air exchange matters.
Kit Contents and What You Still Supply
The Mushroom Monotub Large 66Q Grow Kit is the more complete starter for bulk work because it includes the monotub bin, two 5lb bags of manure loving bulk substrate, two organic sterilized 2.25lb multi-grain bags with injection ports, a quart of vermiculite casing layer, six filter disks, six incubating plugs, a monotub liner and the 8oz mister. You just add your own spore syringe or liquid culture, inoculate the grain bags, then mix the colonized grain with the 10 lbs of bulk substrate for that 3 inch bed. The North Spore BoomRoom II Automated Mushroom Grow provides the chamber itself with 5 racks, automated humidity and FAE control, and a Spore Floor bottom tray to catch runoff, but you supply your own colonized blocks, trays, jars, spawn and substrate separately.
That completeness gap matters for planning. The Mushroom Monotub Large 66Q Grow Kit lets you start with fewer separate purchases, though you must respect the timing note to add the vermiculite casing layer only once the tub is fully colonized and pinning, or you risk stalling the surface. The North Spore BoomRoom II Automated Mushroom Grow gives you climate infrastructure without consumables, so it suits growers who already make grain spawn and bulk substrate or buy ready to fruit blocks. If you have no spawn process yet, the tent will feel incomplete on arrival, while the tub will feel limiting if you already run multiple strains.
Footprint, Build and Daily Upkeep
The Mushroom Monotub Large 66Q Grow Kit lives on a shelf, table or closet floor with a footprint defined by that 22.5” L x 15.5” W tub, plus room to lift the lid and mist comfortably. Its build is straightforward rigid plastic with a liner to protect the bin and simplify harvest, which wipes down easily between runs. The North Spore BoomRoom II Automated Mushroom Grow is a vertical chamber that turns a spare corner into a grow space, using ultra clear heavy duty vinyl so you can watch pin sets without opening the door, plus reinforced racks to hold weight across 18 cubic feet.
Upkeep and cleanliness also diverge. The Mushroom Monotub Large 66Q Grow Kit uses self adhesive filters and black hole plugs to limit contaminants while holding humidity, but every lid lift exposes your room to spores and moisture, so you still need to clean the surrounding area. The North Spore BoomRoom II Automated Mushroom Grow is designed to run negative pressure to filter spores before they escape, with a bottom tray that protects floors from drips, which helps keep your home cleaner during heavy flushes. The tradeoff is more surfaces to maintain, including vinyl walls that can collect condensation and zippers and fan screens that need regular wiping to stay clear.
Which One Should You Get
Choose Mushroom Monotub Large 66Q Grow Kit if you want a contained, budget friendly start for dung loving mushrooms with everything for one bulk bed in the box. You inoculate the two grain bags, mix with substrate for a 3 inch layer, add vermiculite at pinning, and manage humidity with filters, plugs and the included mister. It is a strong match for small apartments, first bulk projects, and growers who prefer a simple tub they can store away between runs. See current availability here: Mushroom Monotub Large 66Q Grow Kit. You should not buy it if you want to fruit many blocks at once or you dislike daily misting and lid checks.
Choose North Spore BoomRoom II Automated Mushroom Grow if you want vertical capacity and automation for mixed indoor mycology. You get 5 racks, integrated humidity and FAE control to hold 90% plus humidity, negative pressure spore control, and a clear chamber for watching growth across trays, blocks and jars. It fits a dedicated corner where you can leave the system running and rotate projects for higher yield per square foot. See current availability here: North Spore BoomRoom II Automated Mushroom Grow. For more context on sizing within this lineup, read our north spore BoomRoom vs still air box tent. You should not buy it if you only plan one small batch or you lack space for a tall tent plus power and water access.
Who Should Skip Both
Both options are not ideal for growers who want a minimal, no equipment start or a sterile lab workflow. If you only want to try a single all in one bag on a windowsill, prefer outdoor beds and logs, or need a still air box and pressure based sterilization setup for agar and culture work, these fruiting chambers add bulk you will not use. You would be better served with grow bags, liquid culture and basic sanitation gear first, then step up to a tub or tent once you have colonized material ready to fruit.
Frequently Asked Questions
Is a Martha tent better than a monotub for beginners?
For most beginners, a monotub is simpler because you manage one contained batch with manual misting and plug adjustments. A Martha tent like the BoomRoom II reduces fanning but adds equipment, space needs and cleaning, so it suits beginners who already have colonized blocks and want steady humidity with less daily attention.
Can the North Spore BoomRoom II replace multiple monotubs?
Yes, that is its main advantage, since the 5 racks and 18 cubic feet of vertical space can hold trays, blocks and jars that would otherwise need several tubs on the floor. You still need to supply your own spawn and substrate, and you will need a suitable corner with power and room for maintenance access.
Do I need to buy substrate and grain separately for either kit?
With the Mushroom Monotub Large 66Q Grow Kit you do not, because it includes two 2.25lb grain bags, two 5lb bags of bulk substrate, vermiculite, filters, plugs, liner and mister, and you only add spores or liquid culture. With the North Spore BoomRoom II Automated Mushroom Grow you do, because it provides the automated tent, racks and runoff tray while you provide blocks, spawn, substrate and containers.
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