In this video we discuss how to build a do it yourself aquarium co2 reactor, bubble counter, diffuser and the best recipe to use to generate co2. Co2 is used in planted aquariums and when used will produced great results. Your plants will look larger, greener and they will be all around healthier. Plant’s in an aquarium absorb co2 and convert it into oxygen during the day (when the lights are on). Please be advised that at night (when the lights are off), plants actually use oxygen instead of producing oxygen and no longer require co2. The ingredients for this (1.89 litres bottle) recipe are: -2 cups of sugar -1/4 tsp of yeast -1/2 tsp of baking soda -then fill the bottle 3/4th’s of the way full with water. -Shake the contents with your hand over the lid and then attach the bottle to the system The reaction will begin to occur within 24 hours. Once the reaction has started you will want to check your bubble counter that your mixture is producing about 1 bubble/second The mixture typically needs to be replaced every 3-4 weeks. If you notice the bubble count has drastically dropped below 1 bubble/second feel free to shake the container. *Warning* If you notice any fish bobbing near the surface it means they’re probably gasping for air and that there is to much co2 in the aquarium. For smaller aquariums beware of this and if it should occur add a valve to reduce the bubble per second rate.