Quote:
Originally Posted by harshal1992  Can I add DIY C02 without adding ferts to the tank? |
CO2 is a kind of nutrient. By injecting CO2 without a corresponding increase of other nutrients, those other nutrients will be depleted down the road - creating an imbalance of nutrients. With such imbalance, many plants may not be able to grow, but algae can. Thus, algae may become an issue.