North Spore – Myco-Mister UltraSonic Humidifier – Large V2

Spring Sale 10% Off!
PRICE: $171.00

A plug-and-play ultrasonic humidifier for “Martha Tent” mushroom grow setups, with ultra-fine misting, adjustable humidity settings, and a 4-Gallon tank for longer uptime, as well as improved output features, make this humidifier perfect for home mushroom growing!


Free shipping available for orders $100 or more. Manufacturer Direct and special order items may require extra charges. See the Docs & Downloads section for product labels and other important information. Questions? Contact us!

Product Features List
  • Ideal humidifier for Martha Tent or BoomRoom mushroom grow setups
  • Ultra-fine mist improves mushroom quality and evenly humidifies area
  • Easily adjustable humidity level
  • Large Tank with adjustable height output tube
  • Plug & Play with all parts included – NO DIY!
  • Ideal for small to midsize tents (up to 4×8)


Humidifier for At-Home Mushroom Cultivation

The Myco-Mister v2 Ultrasonic Humidifier is ideal for smaller mushroom grow setups like a Martha Tent or BoomRoom. Its ultra-fine mist helps distribute humidity evenly throughout your grow area, which improves mushroom quality and reduces blotch and other diseases. 

New and Improved Design

A significant improvement from the v1, this v2 humidifier features a larger tank with an easily accessible fill area, and a longer, higher reaching output for better humidity dispersion without the need for additional air circulation, as well as improve output for compatibility with larger tents.

  • Power: AC power adapter / 80 watts
  • Voltage: 100-240V
  • Capacity: 16 L
  • Noise: <40 dB
  • Output: Up to 350 sq ft. / 2000 ml per hour


Please select a variation to see its technical specifications


Instruction manual

Click here to download

Preventing Mineral Buildup:

Using tap water with a high mineral content (aka “hard water”) with any humidifier can cause a fine white dust build up and/or to be emitted. To avoid this, use distilled or demineralized water. Or, add a demineralization cartridge to the top water tank. This can be done by removing the top cover and placing the cartridge inside. 

See user manual and cautions & considerations below.

Cautions & considerations

  • DO NOT leave the humidifier plugged in for prolonged periods (i.e. several days or more) without use. This causes premature failure of the circuitry. When the humidifier is not in use, turn the knob to the OFF position, then UNPLUG it.
  • DO NOT operate the unit when the water tank is empty.
  • DO NOT remove the water tank when the unit is on.
  • DO NOT USE if any damage to the unit is found. Thoroughly inspect unit in its entirety for any cracks, chips, or damage which could cause the unit to leak.
  • DO NOT add hot water above 104 °F to the water tank to avoid discoloration and distortion.
  • DO NOT plug the unit into any type of power source with wet hands to avoid the risk of electric shock.
  • DO NOT place any metals, chemicals or detergents into the water tank or base; may cause poor atomization.
  • DO NOT operate the unit in freezing temperatures.
  • DO NOT pour out the remaining water from the base without unplugging and turning power to OFF. Otherwise the atomizer will burn out immediately.
  • DO NOT place near any heat source (i.e. heaters, furnaces) and avoid direct sunlight.
  • Before cleaning or moving the unit, turn OFF and disconnect the plug from its power source.
  • When in operation, never place your hand inside the base or near the atomizer as it is dangerous and may cause electrocution.

Customer Reviews

No reviews to show
We Think You Will Love These
Plant a seed with us—the more you buy, the more your savings grow! How it works: every dollar you spend earns you points you can redeem for discounts on future orders. Plus, you’ll get exclusive rewards, coupons, and a whole host of special offers.
Want to be the first to hear about new products, get tips from our expert growers, and receive exclusive coupons? Sign up for our newsletter! You’ll also get advanced notice of special GardenTap sales and promotions. It’s a win-win!

Sign Me Up!

We’re so excited that you’re joining us! You’ll be the first to get the inside scoop on great new products and promotions, useful growing tips from our experts, and exclusive coupons—so you can save money while building the garden of your dreams. Let’s do this!
Chat Available