Dennerle Carbo Care Bio is a liquid carbon fertiliser and the alternative to a CO2-fertiliser system at the aquarium.+ provides a fast and lush plant growth+ improves the ability of plants to compete with algae+ based on natural raw materials+ contains iron, manganese and pottasium+ can also be used with an existing CO2-fertliser system+ save for fishes and invertebrates+ accelerates the growth of the aquarium plantsDosage of Dennerle Carbo Care Biodepends on the quantity of plants and their needs add 1-3 ml per 100 litres of water dialy. Do not exceed dosage! If the dosage is significantly exceeded by accident, carry out a partial water change immediately and aerate the aquarium water if necessary.250 ml are sufficient for 12,500 litres of aquarium water500 ml are sufficient for 25,000 litres of aquarium water.