Dennerle E15 FerActiv

E15 Feractiv is an iron fertiliser in tablet form that's suitable for aquatic plants in freshwater aquariums. It's available in different sizes.

With E15 FerActiv, supply your aquarium plants with immediately effective, nutrient iron, ensuring fresh, magnificent green plants. Deficiency symptoms such as yellow and glassy leaves, which indicate iron chlorosis, will disappear.
Iron is of central importance for all aquarium plants. It is needed for the formation of the green leaves. Without green leaves, plants can't photosynthesise. Iron deficiency immediately shows up in pale and yellowish leaves. Plants can only absorb iron with a valency of 2. Unfortunately, this is not stable in aquariums. It oxidises quickly and is thereby converted into ineffective “brown” trivalent iron. Since tap water contains practically no iron, you should regularly supply your aquarium plants with E15 FerActiv.

Like all Dennerle fertilisers, E15 FerActiv is very stable. Other fertilisers precipitate the active ingredients after a short time, which can be recognised by a brown-black discolouration and lose their effectiveness. Algae are actively displaced by regular fertilisation and have no chance. After just a few weeks, you will see visible success, with plants growing vigorously and developing intense colours. E15 FerActiv can also be used in combination with carbon dioxide fertilisation and is compatible with all aquarium inhabitants such as fish, snails, shrimps and crabs if dosed and used properly.

Application:
Drop 1 tablet of E15 FerActiv into 100 litres of aquarium water every 4 weeks.

Our expert Oliver Knott recommends:
With E15 FerActiv, create a basic iron supply in your aquarium and prevent pale and glassy leaves!