Natural filtration empowers plants to clear and clean a pond. The movement of water across the roots of plants in the filter encourages increased consumption of nutrients and reduces the amount of nutrients available for pea soup algae to thrive.

As the water enters the filter the pressure is greatly reduced allowing solids to settle out and collect on the exposed roots of the plants thereby removing sediment from the pond. Additionally, the tremendous surface area created by the roots of the plants provides a fertile area for beneficial bacteria growth

The natural filter area need only be 10% of the pond surface area. For best results, 1/4 to 1/2 of the pond's water volume should be circulated through the natural filter hourly. Yellow water iris, water mint, watercress and water hyacinth, have proven to be highly effective plants for use in natural filters. These can be cascaded.



There are a variety of mechanical filters available to filter debris in the water column causing "cloudy water." These types of filters are either connected directly to the intake on your water pump or are in-line between your pump and water feature. These types of filters require a filter media material that needs periodic cleaning.

Surface skimmers are another type of mechanical filtration designed to keep your pond's surface clear of leaves or other floating debris. These types of filters also use filter media that require periodic cleaning.