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CO2 Bag Generator

(9 customer reviews)

£28.00 inc. VAT

Experience a continuous and natural supply of carbon dioxide for your plants with our innovative CO2 bags. By harnessing the unique properties of mycelium, which colonises the organic contents of the bag, these products release substantial amounts of pure CO2 as a beneficial by-product. Essentially, as the mycelium grows, the CO2 flows, ensuring your plants receive a constant and abundant supply of this essential gas.

Operating 24 hours a day for a duration of up to 6 months.  Our CO2 bags are the biggest on the market and are produced fresh in the UK, made to order for optimum CO2 output. Each bag is capable of supporting up to 6 large plants or a growing space of up to 35 square feet, and potentially more if ventilation is restricted. Once colonisation is complete, you may get a few Shiitake mushrooms which are edible.

While similar to MyCO2 and Exhale bags, our CO2 bags offer several distinct advantages:

  • Tested and proven to deliver the high CO2 output.
  • Freshly prepared to order to ensure no CO2 is wasted in storage.
  • Utilises supplemented organic hardwood, which provides the highest calorific value for mycelium growth, leading to sustained and higher CO2 production.
  • Employs a slow-growing mushroom strain for consistent CO2 output.
  • Manufactured by a team deeply embedded in the mushroom production industry, allowing us to offer these bags at competitive prices without excessive markup.

These bags require no setup or maintenance, function around the clock, and are entirely natural and recyclable. Our CO2 generators guarantee the highest output of pure CO2, providing all the benefits directly to your plants.

Additionally, our CO2 bags are odour-free, produce no heat, and require no electricity, making them a safe and cost-effective method to enhance CO2 levels in your grow room without the need for expensive equipment or hazardous propane burners. Shipped in discreet packaging. Enhance the growth and health of your plants with our unparalleled CO2 bags, a smart choice for any serious grower.

As this product is produced to order, it may be subject to the lead times below.

Please review the drop-down sections below before placing your order, especially product lead-times if stated.

+ Lead Times

Whilst we often maintain a small inventory of most items for immediate dispatch, often, items that are freshly produced, high-volume, or made-to-order may require additional time before they can be shipped.

This additional time is referred to as the ‘lead time’ or production time. Please consider this when placing your order.

The estimated lead times for this product are listed below:

  • Less than 12 units: up to 10 working days
  • 12-50 units: up to 3 weeks
  • over 50 units: contact us

Please contact us if you require larger orders sooner; we may be able to expedite your order for a small fee.

+ Shipping & Returns

FREE SHIPPING AVAILABLE ON ALL ORDERS OVER £50

Orders are typically dispatched on the same or next working day. However, please allow up to 3 working days for dispatch, plus any additional product lead times, especially during busy periods.

We ship our products in plain, unbranded, reinforced cardboard boxes with ample internal protection.

Our shipping couriers may leave parcels with a neighbor or in a safe place if no one is home to receive them. To prevent this, please select the designated signed-for service at checkout and ensure you are available to receive the parcel. Otherwise, the package will be held at your local sorting office or returned to us. Please note that we cannot be held responsible for lost, stolen, or missing parcels if the signed-for service is not chosen at checkout.

Larger orders that require multiple boxes will automatically be upgraded to DPD Local shipping, as they support multi-parcel shipments. Extremely large or heavy orders may need to be dispatched via a pallet.

If items are returned to us due to a failed delivery, a redispatch or restocking fee may apply. Please ensure that any held packages are collected from your local sorting office within 2 weeks to avoid them being returned.

We highly recommend upgrading to the ‘DPD Express Tracked’ service at checkout, as we find it to be the fastest, safest, and most reliable option. Please note that Royal Mail may occasionally experience delays in their sorting offices.

For more details, please refer to our shipping, returns and replacements policy.

In Stock.

27 people have added this item to their basket in the past 24 hours.
Shipping & Returns info | Free Shipping Available Over £90 🚀
⇓ More product information below ⇓

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5-Star Customer Testimonials

Over 2,300 rave reviews and counting! Here's a random selection (different on every page)...

Delivery, quicker than expected. High quality product as well. Very pleased with the purchase. Many thanks. 😀

⭐⭐⭐⭐⭐Dan Eggleton on Google

Best spawn bags on UK market! I've ordered couple of times from Maya and was never disappointed! Quality bags, quality packaging & best customer service! 5/5 👍🏼👍🏼

⭐⭐⭐⭐⭐Kamilo Kamil on Google

k, speedy delivery, I wouldn't go anywhere else for my mycology needs. Thank you so much.

⭐⭐⭐⭐⭐Steve on Trustpilot

Thanks for answering my query ahead or ordering and providing high quality, fully sterile grain bags and substrate. Good value, allowing me to grow which saved me money on what would have been more expensive to buy.

⭐⭐⭐⭐⭐Mark Brownsmith on Google

CO2 Bag Generator FAQ

Answers to frequently asked questions.

How will my product be packaged and shipped?

We invest significant time and resources to ensure our parcels are securely packaged and reach you safely and undamaged.

If your item requires a box, it will be shipped in a discreet, plain, sturdy, double-walled cardboard box of appropriate size, with unbranded packaging tape and ample internal protection to prevent damage during transit. While accidents are rare, they can occasionally happen.

Smaller, sturdy, and lightweight items will be sent in plain, unbranded padded envelopes.

All pallet orders are professionally strapped, wrapped, and equipped with corner protectors.

We also strive to minimize excessive packaging to help protect the environment.

Scroll down to see a section on our Shipping & Returns info, with links out to our policies

Can you do custom and bespoke orders?

Yes, we can accommodate your needs for any custom orders, substrate / grain mixes, special requests etc. Generally speaking, anything which is considered to be a custom order will have a bespoke price. Please contact us to discuss options.

Do you accept cash payments?

As an online-focused business, we prefer digital payments. However, for orders over £500, we do accept cash payments. Please contact us to process your order and arrange collection.

Can I collect my order from your facility?

We do not provide a standard collection service for orders under £500. If your order exceeds £500 and you wish to collect it, please contact us. Please note that, due to our insurance policies, we are unable to allow public access to our warehouse or offer tours of our facilities.

Unique micro-porous filter strips to regulate the flow of CO2. Perfect for indoor our outdoor grow rooms. Carbon Dioxide is often considered to be the ‘missing nutrient’ and is perhaps more important than lights and nutrients. Plants have the ability to utilise 1500ppm of carbon dioxide for optimised growth, but with typical indoor CO2 levels of ~350ppm, you can see how this is far from optimum. Plants breath in CO2, and with inadequate amounts, your plants and harvests will suffer. Our bags will release approximately 1000-1500ppm of carbon dioxide.

In a vented room, bags are best placed on the floor next to the base of the plants. This way all generated CO2 is pulled through the canopy, directly over the plant leaves. In unventilated rooms, bags can be placed anywhere in the room. If not using straight away, you can place in refrigerator for up to a month to stop mycelial growth and delay CO2 production. Can be used for both vegetative plant growth as well as for fruiting and flower production.

Our CO2 generating bags will first start out brown, but will eventually turn white as the mycelium colonises the bag contents. Once fully colonised, it is normal for the bag to develop a yellow (or other coloured) liquid and for the bag contents to change another colour. The changing in colour happens as a result of the mushroom mycelium colonising and digesting the organic bag contents.

If using the bag in a greenhouse, ensure the bag is kept out of direct sunlight.

Make sure to never pierce the bag as this could potentially contaminate the bag contents with mould spores.

After CO2 levels stop, you can compost the bag contents, the bag itself is made from Polypropylene, which might also be recyclable depending on your local regulations.

Effects of CO2 on Plant Growth

Seeing is Believing

Why is Carbon Dioxide Important?

Carbon Dioxide 101

SHIPPING & RETURNS INFO

No fuss Shipping, Returns & Guarantee.

  • We aim to dispatch orders within 2 working days (Monday-Friday)
  • Free shipping option for orders over £50.00 - Shipping Policy
  • No questions asked returns & refunds policy - Returns & Refunds Policy

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PRODUCT REVIEWS

9 reviews for CO2 Bag Generator

  1. Marcus111 –

    cheapest way for me to increase co2 in my grow room I placed bag on floor as recommended and seems to do the trick

  2. Stephen s –

    Initially I thought I got a duff bag as little co2 was being produced, I contacted Paul who outlined that the bag was made fresh on day of dispatch and that CO2 would start increasing in the next couple of days, which, it did. 3 weeks in and still going strong, it's a pretty big bag, I have 2 grow rooms@ roughly 2m x 2m dims, noticeable vitality and enhanced grow on the one with the bag in.I usually dont leave reviews but company was so helpful and product works that wanted to. thanks Paul & the team

  3. Aleksa –

    cheaper than the rest and they are bigger and better does take a few days to start CO2 off but would rather that that have a half colonised one with a shorter life span. great job A++++

  4. Dan Dan The Man –

    Simple concept and it works. Every one should use one of these. seems like a reputable company so happy to support

  5. Steve P –

    no problems, well packed, now a week into colonising so can see growth and PPM meter for CO2 shows 800-900 but I do have ventilation so fine with that. was at 380ppm before. plants dig it cant wait until harvest

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