Quickly binds pollutants, residue of medication, yellow cast and other undesirable substances in the aquarium water, thus making the water crystal-clear. The utilization of Eheim Aktiv is especially important for the first installation of the aquarium and after medication treatment. Use activated carbon for a limited period of time only (approx. 4 weeks), and subsequently remove or replace it.
Eheim Aktiv is used in the layer structure directly downstream of the mechanical filter medium. Best to use it in the net bag supplied.