CO2 levels
Each week, you will want to do a water change of 10% to help prevent the buildup of organic waste and mitigate the growth of algae. During the first few weeks of owning your planted aquarium, you’ll want to change your water even more frequently. As your tank matures, you’ll reduce the frequency of change down to one. Every week you’ll also want to check to ensure all your equipment is working properly. This includes the heater, filtration, lighting/timer, CO2 equipment, etc.). If something isn’t working, it may cause an imbalance in your aquarium’s overall health. Also, be sure to clean the glass and check for algae growth to see if you need to change anything with your lighting setup, CO2 levels, or amount of water changes.