The Role of CO2 in Hydroponics: Boosting Plant Growth for Maximum Yield

The Role of CO2 in Hydroponics is to maximize your plant growth. While nutrients, lighting, and water quality often take centre stage, CO₂ is just as crucial in optimizing plant health and yield. In this blog, we’ll explore how CO₂ benefits hydroponic systems, the best ways to introduce it, and how it can help you achieve rent-free gas in your indoor growing setup.

Why Is CO₂ Important for Hydroponics?

Plants use CO₂ during photosynthesis, the process in which they convert light into energy. In traditional soil-based farming, CO₂ levels fluctuate naturally, but in an indoor hydroponic system, CO₂ can become a limiting factor, especially when plants are growing rapidly under strong artificial lighting.

When CO₂ levels are increased beyond the natural atmospheric concentration (which is about 400 ppm), plants can grow faster, produce larger yields, and even become more resistant to pests and diseases. Most hydroponic growers aim for 1,000 to 1,500 ppm of CO₂ in their grow space for optimal results.

Benefits of CO₂ in Hydroponic Systems

    1.            Faster Growth: With higher CO₂ levels, plants photosynthesize more efficiently, leading to quicker vegetative growth and earlier harvests.

    2.            Increased Yields: More CO₂ means plants can produce bigger fruits, flowers, and leafy greens.

    3.            Better Resilience: CO₂-enriched plants often show greater resistance to stress, including heat and pests.

    4.            Efficient Use of Light: CO₂ supplementation allows plants to make full use of high-intensity grow lights, improving energy efficiency.

How to Introduce CO₂ into Your Hydroponic Setup

There are several ways to add CO₂ to a hydroponic grow space, and choosing the right method depends on your setup and budget.

1. CO₂ Tanks and Regulators

The most common method is using compressed CO₂ cylinders with a regulator and timer system. This allows precise control over CO₂ levels, ensuring plants receive the optimal concentration without waste. As the areas largest Adams Gas Stockist, we have a wide range of sizes in stock for all your Hydroponic requirements and all completely rent free:

CO2 1.5 KG

CO2 3.15 KG

CO2 6.35 KG

CO2 15 KG

CO2 34 KG

2. CO₂ Generators (Burning Propane or Natural Gas)

CO₂ generators burn propane or natural gas to produce carbon dioxide. This method is ideal for larger grow rooms but produces heat, which must be managed with ventilation. If you’re using rent-free gas, this could be a cost-effective solution for maintaining high CO₂ levels.

3. Fermentation or Dry Ice

For smaller or budget-conscious setups, CO₂ can be introduced through fermentation (e.g., sugar and yeast) or using dry ice (solid CO₂ that sublimates into gas). While less controllable, these methods can still be effective for increasing CO₂ levels.

4. CO₂ Bags or Mushroom Cultivation

Certain CO₂ bags contain mycelium, which naturally releases CO₂ as it grows.


Why Choose Rent Free Gas?

Rent Free Gas is the areas leading provider of Rent Free Cylinders, offering a efficient and reliable solution for all your gas requirements, including:


Areas We Serve

We proudly serve customers in:

  • Aldershot
  • Farnham
  • Farnborough
  • Fleet
  • Guildford
  • Camberley
  • Surrounding areas across Hampshire and Surrey.

Delivery and Collection Services

We offer flexible services to ensure you can access your Rent Free cylinders with ease:

  • Local Delivery: Convenient delivery options for Hampshire & Surrey and nearby areas.
  • Collection Service: Prefer to pick up your gas? Visit us at our Aldershot location.

Get in Touch with Rent Free Gas

If you’re looking for a dependable Adams Gas supplier in Hampshire & Surrey, look no further than Rent Free Gas.

  • Call us: 01252 540319
  • Visit us: 6 – 10, Rotunda Industrial Estate, Albert Rd, Aldershot GU11 1TG

Contact us today to learn more about our products and services. With Rent Free Gas, you’ll always have the gas you need for your home or business.

New Issue Calor Cylinders

If you’re looking for a New Calor Cylinder then we have some great news for you!

We are now able to complete CRAs for new cylinder issues on the entire Calor Gas Range. There are now 10 cylinder sizes we can complete new issues for: 7KG Butane, 15KG Butane, 6KG Propane, 13KG Propane, 12KG Auto, 18KG Auto, 19KG Propane, 47KG Propane, 5KG Patio & 13KG Patio cylinders.

All these cylinders are in stock and are available for collection or delivery. If you have any questions or need any assistance, please speak to one of our sales team who are on hand to help. 01252 540319 or Email Us

Calor Gas Cylinders Being Discontinued

Calor have announced that as of 1st February, they will be discontinuing the 3.9KG, 4.5KG & Cube Gas Cylinders from their range!

Why have they done this?

“Improving our cylinder service is a priority. Our existing range of cylinders is creating complexity within our supply chain. This means longer change over times and reduced filling capacity on high volume key sizes. That’s why we’ve taken the difficult decision to reduce our cylinder range, simplifying the business.

For any customers with these cylinders, we will be able to exchange them for alternative cylinders. For example those looking for a 3.9KG Propane will be offered a 6KG Propane, and those looking for a 4.5KG Butane will be offered the 7KG Butane.

As the Cube Cylinder was specifically designed for the Calor Cube Heater, there is sadly no alternative cylinder. Because of this we can either offer a refund in accordance with your Cylinder Refill Agreement, or £7.50 Inc. VAT if you don’t have your original paperwork (CRA)

We apologise for any inconvenience this may cause, but as always we will try to help wherever possible.

B&Q Supply Update

As of December 31st 2022, Calor will no longer be supplying any B&Q stores with their gas. This will mean that any customers who purchased a cylinder from either their Farnborough or Guildford branch will no longer be able to exchange it there.

As one of the areas leading Calor stockists, we will be liaising with Calor to ensure that we have a constant and reliable supply of their range coming into us. This will help to ensure that any customer seeking to exchange their empties for full ones, will not be disappointed.

We will also be increasing our stock of the 5KG Patio & 13KG Patio (Green) cylinders as we expect to see a significant increase in sales as the good weather starts to return.

The advice we always suggest to our customers is try and pre-order wherever possible to avoid disappointment.

If you have any questions please get in touch with us on 01252 540319.

Featured Calor Gas products:

Calor 15 KG Butane

Calor 15kg Butane

The Calor 15 KG Butane is ideal for large portable domestic heaters

RegulatorCalor 21mm Low Pressure Butane Clip-on Gas Regulator

Not the size you’re looking for? Why not try some of our other cylinder sizes:

Calor 4.5 KG Butane
Calor 7 KG Butane