EHEIM 2510051 SUBSTRAT PRO 1 litre

Sintered quartz material with an extremely craggy surface area for intensive bacteria colonisation.

Optimum biological decomposition of harmful substances..

Very low dust due to abrasion resistance and extremely long lasting.

Specially shaped to create a current like water flow with vortex effect.

pH neutral for fresh or marine water.

Washable and reusable over and over again.