Tetra IN 800 & IN 1000 Plus Filter Foams x 4

Replacement biological filter foams BF 800/1000 Plus for Tetra IN 800 Plus and IN 1000 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.