Natural substrate which filters and enhances plant growth.
- Supports the filter with its large colonisation area for pollutant-absorbing bacteria.
- The special structure supports the development of plant roots.
- Restricts the growth of algae by absorbing excess fertiliser.
- The rounded shape is also gentle on the sensitive barbels of ground-dwelling fish.
- The optics are attractive and natural.
- The special structure supports the development of plant roots.
- Restricts the growth of algae by absorbing excess fertiliser.
- The rounded shape is also gentle on the sensitive barbels of ground-dwelling fish.
- The optics are attractive and natural.
