Evolution Aqua K1, K1 Micro, K3, K+ Floating, and K+ Sinking Biological Filter Media Variety:K1 Micro Media — 50 Liters sludge and debris) may disrupt

sludge and debris) may disrupt the balance

This filter doesn't hold solids -- it gets rid of them

renewable alternative to petroleum-based products

Includes everything needed for a complete installation

Meets anti-siphon requirements

Evolution Aqua K1, K1 Micro, K3, K+ Floating, and K+ Sinking Biological Filter Media Variety:K1 Micro Media — 50 Liters sludge and debris) may disruptFree shipping on all K1, K3+ and K+ media! Evolution Aqua K1 filter media is a high performance filter media that provides a large protected surface area. K1 Media provides protected surface area to boost beneficial bacteria colonization for biological filtration. K1 Micro is identical to K1, but the smaller shape allows even more protected area per unit volume, giving it an even higher ability to perform biological filtration. Each liter of K1 Media