Pumice Stone

Improve your biological filtration and maintain pristine water clarity with our range of natural pumice stone filter media. Sourced from high-grade volcanic rock, pumice provides an exceptional, highly porous matrix that serves as an ideal biological substrate for Bakki showers, trickle towers, and multi-bay filter systems.

Characterised by thousands of naturally formed micro-pores and interconnected internal cavities, each piece of pumice stone provides a massive colonisation surface area for colonies of beneficial nitrifying bacteria. As water cascades through the open cellular structure, the media promotes rapid biological breakdown of ammonia and nitrite while encouraging vigorous gas exchange and oxygen saturation. Unlike heavier rock substrates, pumice stone is lightweight, reducing structural strain on tiered shower units, and remains physically durable under high water flow without crumbling or producing silt. Safe for all pond environments and completely non-toxic, explore our complete pumice stone collection to supply your filtration system with dependable, natural bio-media engineered for balanced water quality and healthy fish.