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Midwest Grow Kits

Co2 Boost Self-Activated Bag for Plants, Grow Rooms 2.0

Co2 Boost Self-Activated Bag for Plants, Grow Rooms 2.0

Regular price $19.99 USD
Regular price Sale price $19.99 USD
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CO2 Boost Self-Activated Bag for Plants – Version 2.0

9–11 Months of Natural CO₂ Output + Surprise Gourmet Mushroom Harvest

Take your indoor garden to the next level with the CO2 Boost Bag 2.0—a self-activating, long-lasting CO₂ mushroom grow bag enrichment system designed specifically for grow rooms, tents, and indoor plants. Powered by a proprietary strain of gourmet mycelium, this 5-pound bag releases high levels of carbon dioxide for 9 to 11 months without producing any mushrooms… until it’s time.


How It Works:

When activated, the mycelium inside the bag begins consuming the nutrient-rich substrate, emitting continuous CO₂ directly into your grow space. This enhances photosynthesis, boosting growth and yield. Most growers start noticing improvement within the first 7 days.

On the 10th month, the mycelium begins to fruit—producing a rare, delicious oyster mushroom that tastes like a mix of shiitake and buttery blue oyster with a steak-like texture. Just cut off the top of the bag and enjoy the gourmet reward.


Proven Benefits for Indoor Plants:

  •     Boosts CO₂ levels by 600–800 PPM in 5x5’ grow tents
  •     Ideal for vegetative growth and flowering stages
  •     Supports 4–6 plants in small to medium grow setups
  •     Increases yields by up to 30% and can cut harvest times by 18%
  •     Works with all plant types, from houseplants to produce
  •     Can revive struggling or slow-growing plants

What’s Included:

  •     (1) 5-lb CO₂ Boost Bag (Self-Activated)
  •     Step-by-step activation instructions
  •     Retail packaging for easy storage or gifting

Activation is Simple – Takes 60 Seconds:

  1.     Extend the bag.
  2.     Mix the colonized grain with the substrate inside.
  3.     That’s it! CO₂ production begins immediately.

Bonus Mushroom Variety Info:

This CO₂ bag uses a unique Pleurotaceae family strain (a rare oyster mushroom), which remains dormant for nearly a year before fruiting. Classified as:

  •     Kingdom: Fungi
  •     Division: Basidiomycota
  •     Class: Agaricomycetes
  •     Order: Agaricales
  •     Family: Pleurotaceae
Quantity
  • All-in-one, ready to grow
  • Produces multiple flushes
  • High-quality, USA-made
  • Great for home or classroom use
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What Our Customers Say

Real growers. Real results.

4.8
★★★★★
Based on 426 reviews
5★
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“Amazing local shop with top-notch products and friendly support!”
— Verified Customer
Blue Oyster Mushroom Harvest
★★★★★
“Bountiful First Flush!”
“Picked up two spray-and-grow oyster kits directly at the Fourth Plain showroom. The staff gave great humidity advice, and within 9 days I harvested over 2 lbs of fresh clusters! Exceptional local resource.”
Lion's Mane Harvest
★★★★★
“Dr. Myc Additives Are Game-Changers”
“I was battling contamination in my Lion's Mane tubs until using Dr. Myc TrichEVICT from Fern Prairie. Mixed it during spawning with their sterile bulk substrate—zero green mold and massive secondary flushes.”
Sterile Flow Hood & Monotub
★★★★★
“Midwest Monotub & Grain Perfection”
“Top-shelf equipment from Midwest Grow Kits delivered quickly with clear instructions. The 5-grain spawn colonized vigorously without any stall. Having local in-store pickup for replacement filters is a huge plus.”