Many of the nutrients which are essential for healthy plant growth are not present in the artificial aquarium environment. Due to a special formulation which omits nitrates and phosphates and supplies the correct balance of trace elements Flora Boost will ensure optimum plant growth without stimulating algal problems. For use in coldwater and tropical freshwater systems Effective new active ingredients Will not permanently colour the aquarium water Harmless to filter and all species of fish and plants Phosphate Free Contents 100ml Flora Boost Pipette Measuring Cap Guide to Fish Health Treats 500 litres e.g. aquarium 5ft x 2ft x 2ft