DIY CO2 USING BAKING SODA AND CITRIC ACID

DIY CO2 USING BAKING SODA AND CITRIC ACID
2 x 2L Plastic Bottles, e.g. Coke or Sprite.

Bottle A
200g Citric Acid Powder.
Mix with 600ml Water until dissolved.

Bottle B
200g Baking Soda
Mix with 200ml Water until dissolved.

To start, citric acid or vinegar is poured into bottle A, and a mixture of baking soda and water is poured in bottle B. The caps with tubing attached are the screwed onto the bottles.

The needle valve is opened, and bottle A is squeezed slightly to inject Citric Acid in to bottle B. This starts the generating of CO2. The needle vale is then closed to allow pressure to build in the bottles.

Mix bottle B by swirling the mixture around - you should see some bubbling. If not, squeeze some more citric acid from bottle A.

When the pressure gauge reads 1.5 bar in bottle A you can slowly open the needle valve to begin the flow of CO2 to your diffuser.

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