Tetra IN 400 & IN 600 Plus Filter Foams x 4

Replacement biological filter foams BF 400/600 Plus for Tetra IN 400 Plus and IN 600 Plus internal filters. Contains 4 filter foams.
Tip:

When replacing a Tetra IN Plus Filter Foams, we recommended the use of Tetra Filter Active to make sure that lost filter bacteria is quickly restored.