Trickle tower medium waterfall with sieve
Trickle filters are biological filters that serve as the second or third step of the filtration process. These filters can be installed as pre- and post-filters or used as an extra addition to another filtration process. Trickle filters break down harmful waste products into harmless compounds. Filtreco trickle filters work as drip units, which means that they add plenty of oxygen to the water.