All plants need carbon to grow. Aquatic plants obtain their carbon through CO2 dissolved in water. Liquid CO2 Boost gives aquatic plants a source of dissolved carbon without the need for expensive equipment such as CO2 gas injection. With Liquid CO2 Boost plants will grow more vigorously removing algae-causing macronutrients such as nitrate and phosphate.For extra luscious and vibrant plant growth Liquid CO2 Boost should be used in conjunction with Plant Boost. Plant Boost is a rich all-in-one plant food which provides all the trace elements used by growing plants especially iron magnesium and potassium.