Sera Siporax Proffesional 15mm 14.5 kg / 50liters box

The surface of one liter of sera siporax Professional has almost as much biological breakdown power as 34 liters of clay filter material

Calculation formula for sera siporax pond:

One single liter sera siporax pond is sufficient for purification of 1,000 liters pond water with 20 pond fish of 10 cm length each or a comparable stock (representing approx. 1.5 kg) of fish fed with up to 40 g high quality food per day] and release it from organic pollutions in long terms.