Make Your Own CO2 Kit
The need for Carbon Dioxide (CO2)Plants need a constant supply of CO2 to thrive - In nature CO2 is continually replenished from groundwater, and from the respiration of organisms breaking down waste matter.
In an aquarium, CO2 is also continually produced, mainly as a waste product from respiration by bacteria and the breakdown of waste material. However, the typical amounts produced fall way short of the needs of well-planted tanks and if we do not add extra CO2, plants find life a little harder and have to expend more energy to grow. It is perfectly possible to grow healthy plants without extra CO2, but giving that extra boost can make all the difference.
OptionsThere are many products on the market to supply CO2 to your plants, and the best are based on a pressurised canister, regulator, and diffuser. These units are much better than anything which can be home made, but they are expensive at £150 or more, and need monthly refills at £5-£10 a go. If you can afford these, buy them.
A cheaper option is to purchase CO2 generators based on fermentation, which typically cost between £30-£50 and require fortnightly refills at about £3-£5 a go. These generators are actually quite simple to make and unfortunately for the manufacturers, we are going to show you exactly how to make one, and a better one at that!