Natural substrate which filters and enhances plant growth.
- Supports the filter with its large colonization area for pollutant-absorbing bacteria.
- The dedicated structure supports the development of plant roots. Restricts the growth of algae by absorbing excess fertilizer from the water.
- The rounded shape is also gentle on the sensitive barbels of ground-dwelling fish.
- Suitable for: Freshwater / Turtles / Invertebrates