Pumice stone filter media is now being used extensively as an alternative to traditional koi pond filter media in trickle filters and trickle towers. Pumice stone filter media is inert and rapidly colonises with beneficial bacteria, which help cleanse the pollutants. It is highly porous making it the ideal media for biological filters of all kinds.
Advantages:
High surface area and lightweight
Very economical and matures quickly
Very low maintenance
Excellent biological filtration
Improved fish stocks due to the extra performance over alternative media
