JBL FilterStart with 15,000,000 living cleansing bacteria make the filter of your aquarium biologically active. You will have clean water and healthy fish by the rapid break down of toxic ammonia and nitrite in the filter. Package content is sufficient for approximately 3 litres filter material.https://www.aquaristikshop.com/aquaristic/JBL-FilterStart/125159/
- Roman K. wrote about JBL FilterStart in 2017:
JBL FilterStart reduces the time of the colonization of beneficial bacteria of the biological filter.