DIY CO2 Yeast Nutrient Sachets — 3-Pack

These pre-measured yeast nutrient sachets take the guesswork out of refreshing a DIY CO2 generator. Each sachet contains a precisely balanced blend of dry yeast, sugar, and supplementary nutrients designed to optimise CO2 production duration and output consistency in a standard 1–2 litre plastic bottle. Simply dissolve the sachet contents in warm water, seal the bottle with the CO2 cap, and CO2 production will begin within 12–24 hours. Each sachet typically delivers 4–6 weeks of productive CO2 output, depending on ambient temperature and bottle size. The pack of three provides a three-rotation supply, making it convenient for aquarists to maintain continuous DIY CO2 injection without sourcing separate yeast and sugar.