Trickle filter media

Trickle filters are excellent for breaking down harmful, dissolved waste (such as proteins, ammonium, nitrite) into harmless compounds. The more fish swim in the pond, the more waste is produced. Aerobic bacteria convert this waste into nitrate.

A trickle filter can help you with this. It provides the biological stage after pre-cleaning by, for example, sieves, drum filters or paper filters. These towers are also ideal as an extension of your biological filter stage. If you sometimes have problems with your ammonium or nitrite levels, you can place such a tower behind your existing filter to perfect your nitrification. With an existing gravity filter, simply connect the trickle filter after the pump. The outlet pipes must run freely into the pond.

The water is pumped into the trickle tower via a spray pipe Ø 50 mm. Via a perforated bottom, the water flows through the individual chambers back to the pond. Many water droplets hit the next layer, burst and ensure good oxygen enrichment.

To fill the filter, we recommend Siporax, New² Bio Crystal, Hel-X®, AquaClear, Bacteria House, Lotus Root or even oyster shells as filter media. These filter media are coated with light oxygen and are optimal for the development of useful bacteria for nitrification. Especially in the warm season, the oxygen also ensures optimal aeration in the pond. However, always use porous filter media so that the bacteria can settle.