Eheim Substrat Pro 5L

Substart Pro provides optimum biological decomposition of harmful substances. The colonized material will lower nitrites even in heavy concentrations. There is very low dust due to abrasion resistance and has a specially rounded shape that helps to create a current-like water flow with vortex effect. It has a neutral pH and can be used in freshwater and saltwater aquariums. Made of sintered quartz material that has an extremely craggy surface area for intensive bacteria colonization.