How to Create Co2 For Indoor Gardens

looking for how to create CO2 for indoor gardens? Indoor gardeners all over the world are constantly seeking innovative methods of improving their yield.


Today, there are several methods but one that stands out is adding Co2 to grow rooms. Doing this helps to produce healthy, strong plants and improve overall yield.

Have you been looking for how to create Co2 for indoor gardens? Would you like to know how to make Co2 at home? If your answer to at least one of these questions is yes, then you just picked the right article. We will provide answers to these questions and a few others in this post.


How to Create Co2 For Indoor Gardens

Co2 is the chemical formula of Carbon dioxide. While humans expel Co2 when breathing it is very important to plants. Co2 is a major part of the photosynthesis process. One interesting thing about the relationship between plants and C02 is that they breathe it in during the day and expel it at night.

When you increase the amount of Co2 in your growing environment, your plants will be bigger, stronger, and healthier. Do you know that plants can make use of up to four times the Co2 in the atmosphere? What this implies is that more Co2 will generate more yield for indoor gardeners. One challenge that lingers for many indoor farmers is how to create Co2 for indoor gardens.

If you have a planted tank, the steps below will help you make homemade Co2. First, let’s look at some of the items you will need.

  • Knife
  • Scissors
  • Aeration stone
  • One or two clean soda bottles
  • Airline tubing (you don’t need more than 15 feet)
  • Aquarium-safe silicone
  • Check valve

The process we will describe below is how to make a Co2 reactor at home. If you will be using two soda bottles, you will need a T-way connector valve also known as a T-Splitter. With this out of the way, here’s how to make homemade Co2 for planted tanks:

How to Create Co2 For Indoor Gardens -Step 1:

Drill a hole into the cap of the bottle using your scissors or knife. Note that the hole should have a slightly smaller diameter than the length of the aquarium tubing.

Step 2:

Snip the airline tubing at an angle so that it is easier to insert it into the cap. Now, thread it into the bottle cap carefully. It doesn’t have to penetrate so much, just an inch is enough. Note that the length of airline tubing that you need depends on whether you are creating a single or dual setup.

Step 3:

Cover both sides of the cap with the aquarium silicone to create an airtight seal. Allow it some five to ten minutes to set properly then continue to the next step.


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Step 4:

If you are making use of a dual setup, then go over “Steps 1 to 3” again to create the second reactor bottle. When you are done, join both bottles with the T-Splitter. The splitter helps to channel Co2 into the reactor from both bottles through the airline tube.

Step 5:

Cut another piece of airline tubing then attach it to your T-Splitter. The third airline tube stretches into the reactor from the splitter so make sure that you use the right measurements.

How to Create Co2 For Indoor Gardens- Step 6:

Locate the check valve and set it properly so that the arrow points to the tank from the bottle (this shows the flow of the CO2). Cut the line that runs to the tank from either the single soda bottle or T-Splitter. Now, attach the check valve between the tank and bottles making it closer to the latter.

The check valve helps to ensure that water doesn’t leave your aquarium and enter the line once the CO2 pressure fizzles out. It also ensures that CO2 flows in just one direction when you remove any of the bottle caps.

Step 7:

Attach the aeration stone to the end of the tube. This helps to break up any large CO2 bubbles so that they can dissolve faster. Look for points in the aquarium where there are strong currents to keep bubbles submerged for longer. These are the best points to place the aeration stone. Another vantage position to place the stone is near the canister filter.

Can I produce CO2 at home?

We have shown you how to create CO2 for the indoor gardens above. If that method doesn’t work for you, then you may likely have another question on your mind. Can I produce CO2 at home in a different way? Yes, you can.

In this section, we will show you how to make co2 for plants with baking soda and vinegar. Here’s what you need:

  • Baking soda
  • Candle
  • Empty 2-liter soda bottle
  • Funnel
  • Matches or lighter
  • Vinegar

The steps below will guide you through the process:

Step 1: Pour one inch of vinegar in the empty 2-liter soda bottle with the funnel.

Step 2: Clean the funnel and dry it properly.

Step 3: Add two tablespoons of baking soda to the bottle with the funnel. Do this slowly as the mixture will fizz. Continue adding the baking soda to the bottle until the fizzing stops. Note that the gas that the process gives off is carbon dioxide.

Step 4: Light your candle then pour the Co2 over the candle carefully. Again, you should be careful not to let out the mixture, just the gas.

Do I need CO2 for indoor grow?

Adding CO2 to your indoor grow room presents your plants with two main benefits. The first is that they grow faster, and the second, you get a greater and healthier yield. CO2 helps your plants to conjure the energy that they need to thrive. Let’s not forget that it is a very important component of photosynthesis, the process through which plants produce their food.

How to Create Co2 For Indoor Gardens -Conclusion

We have shown you how to create CO2 for indoor gardens and how to make CO2 at home in this post. If you have any questions, kindly drop them in the comments section and we will respond promptly.



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