Hozelock Kaldness Biomedia K3 5 Litres Hozelock Kaldness Biomedia K3 5 Litres

As used in latest versions of Hozelock Bioforce Filters.
Made under license from Evolution Aqua this media is engineered in a wheel shape and is slightly buoyant. This near neutral buoyancy allows the media to circulate throughout the filter with only minimal water flow.
This flow is created with your air pump and air stones or diffuser etc.

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