There are oxygen-poor conditions within the tunnels. This makes the bacteria crack nitrate to get enough oxygen. Consequently, they continuously break down nitrate, and the pond water remains low in nitrate.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. The item "AQUARIUM MARINE FISH TANK, SUMP GARDEN POND FILTER MEDIA SIPORAX 25mm (50l) BOX" is in sale since Saturday, April 1, 2017. This item is in the category "Pet Supplies\Fish & Aquarium\Filter Media & Accs. The seller is "super_aquarium" and is located in CONNAH'S QUAY.
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