Oase AquaActiv PondLith is a pure natural zeolite, grain size 5-10 mm. This special high-performance filter material for ideal for decomposing nitrogen compounds. It is simply fast aid for excessive ammonium.
Using the PondLith is great for filter support during the run-in phase. Using PondLith will withdraw the important nutrients that are the basis for green algae.
Per m³ pond volume 1 kg (without fish stock), 2 kg (with fish stock) or 3 kg (for koi ponds)