Carbon is essential for all plants, including aquarium plants. Happy-Life HappyCarbo is a highly concentrated carbon source for all aquarium plants that can be used as a supplement to normal CO2 fertilization or on its own. Due to the increased growth of the aquarium plants, any algae that may be present are deprived of nutrients and these disappear. Happy-Life HappyCarbo is ideal for combining with Happy-Life Plant. Happy-Life HappyCarbo should never be used at the same time as Happy-Life liquid filter medium, but only a few hours later. Since Happy-Life HappyCarbo is a CO2 fertilizer, overdose is strongly discouraged!