sera pond bio nitrivec, 2500 ml

ue to the purification bacteria it includes, sera pond bio nitrivec, a sera biotechnology product, breaks down ammonium and nitrite effectively, quickly and in a natural way. The included mineral volcanic rock removes pollutants, effectively binds cloudiness and provides settling space for the purification bacteria. The volcanic rock also contains calcium, potassium and magnesium - indispensable minerals that are continuously consumed in a pond. For healthy, clear and biologically active water. Allows adding fish already after 24 hours!