EHEIM SubstratPro Freshwater Regular use -NP Pro allows

Regular use -NP Pro allows you to reduce the amount of nitrate to an undetectable level

and marine tanks

Fast curing and easy to apply

High-capacity overflow design for quiet

EHEIM SubstratPro Freshwater Regular use -NP Pro allowsThe EHEIM SUBSTRATpro is a high performance biological filter medium made of spherical sintered glass beads designed for both freshwater and marine aquariums. It offers an extremely large surface area for beneficial bacteria colonisation, reducing nitrite peaks and extending maintenance intervals. The material is washable and reusable, allowing you to preserve the bacterial colony rather than replacing media frequently. It is best used in the