HEISSNER Flow-Through Filters

Pond filter systems for biotopes, garden ponds and compact fish ponds

If you are looking for a robust solution for long-term outdoor water clarification, the HEISSNER range offers durable flow-through filters that are perfectly synchronised with their corresponding pond pumps. These systems are the premier choice for maintaining consistently high water quality in your installation over the long term.

These high-performance filtration systems truly come into their own in garden ponds and ponds with fish populations. Due to their specific open-system design, water is steadily guided through various filtration stages. Thanks to this impressive flow capacity, they are ideally suited to handling higher nutrient levels or heavier fish stocking, ensuring your water remains crystal clear.

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Operation and maintenance of your flow-through filter:
To ensure the biological filtration of your pond remains uninterrupted, the system should be kept in continuous 24-hour operation throughout the season. This is the only way to ensure that water parameters remain stable. Depending on your local climate and the depth of the pond, you can adjust or pause operation during the winter months.

Regular care is essential for maintaining consistently high filtration performance:

  • Schedule a cleaning roughly every 2–6 weeks.
  • Keep in mind that cleaning should be done more frequently in case of heavy fish stocking or during the hot summer months.

How it works and ideal applications:

Operation and maintenance of your flow-through filter:
To ensure the biological filtration of your pond remains uninterrupted, the system should be kept in continuous 24-hour operation throughout the season. This is the only way to ensure that water parameters remain stable. Depending on your local climate and the depth of the pond, you can adjust or pause operation during the winter months.

Regular care is essential for maintaining consistently high filtration performance:

  • Schedule a cleaning roughly every 2–6 weeks.
  • Keep in mind that heavy fish stocking or the hot summer months often necessitate shorter intervals.

How it works and ideal applications:
A flow-through filter operates as an open system in which your pond water passes through several consecutive filter chambers. This multi-chamber system provides highly effective clarification by mechanically filtering out debris and breaking down organic waste. As these units can be easily expanded if required, they offer an exceptionally high filtration capacity for demanding projects.

This type of filter is particularly recommended for:

  • Medium to large garden ponds with a corresponding water volume.
  • Ponds with higher stocking levels or dedicated Koi ponds.
  • Installations designed for permanent, high-performance operation.