JBL - Manado, Natural substrate 25L

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 in the water.
• The rounded shape is also gentle on the sensitive barbels of ground-dwelling fish.
• Creates a natural and attractive appearance.