A ferric fertiliser for aquatic plants cultured in aquaria. Intended for systematic filling up with iron – a compound which is included in chlorophyll – photosynthetic pigment. Iron deficiency results in chlorosis, which causes leaves to turn pale and yellow and inhibits the growth of the plants. It is recommended to use FERRO-AKTIV at least once a week when you change water in the aquarium. If the population of plants is dense, smaller doses can be applied in shorter periods of time. If used regularly, FERRO-AKTIV guarantees green leaves of aquatic plants and their intensive growth. We also recommend multi-ingredient fertilisers for aquatic plants: AQUA PLANT and AQUA PLANT B.