sera florenette is a Iron and mineral fertilizer in tablet form. sera florenette work as nutrient depot. The active substances are slowly delivered. Corresponds to the needs of all plants, which take up nutrients over the roots. A tablet is sufficient for 20 litres water.Sera florenette+ ideal basic care for aquariuim plants+ for the roots, with depot effect+ free from Nitrate and phosphate+ well tolerated by all invertebrates+ dosage: every second week 1 tablet for 20 l of aquarium water