Dennerle Plant Active Enzymes ist the secret recipe from the Dennerle aquarium plants nursery. Dennerle Plant Active Enzymes is a special product for the more discerning aquarium plant enthusiast. It will bring additional growing power to any aquarium. Dennerle Plant Active Enzymes makes plants that are already stunning even more magnificent. In aquaria where, despite fertilization, plant growth is sparse, it restores the environment to one that is conducive to growth, as well as providing reliable assistance in countering stagnant growth. Dennerle Plant Active Enzymes acts in a variety of ways: Growth-stimulating, natural plant enzymes encourage cell division. Leaf formation is promoted, and the entire plant strengthened. Plant nutrients in the aquarium that have become ineffective are remobilised. Active iron chelates give leaves a rich green colour. Special benefit: Dennerle Plant Active Enzymes also creates unfavourable growing conditions for algae. Existing algae are kept in check