Do Freshwater Fish Tanks Need CO2? Benefits for Aquarium Health and Plants
Freshwater fish tanks do not need carbon dioxide (CO2), but it helps planted aquariums. Use CO2 if your tank has 3 or more watts per gallon (wpg) of light. Smaller tanks may require less CO2, especially with low light. Balancing light and nutrients is vital for healthy aquatic plants. Adding CO2 can enhance the health … Read more