ll replacement pre-filter foams come in sets of four or six for your replenishment needs.
Timing to replace the pre-filter foams varies upon aquarium size, number of fish and plants, and declines in filter performance. All BioMaster filter foams are compatible with any of the BioMaster models.
Suitable for:
BioMaster 250 – 4 units needed
BioMaster 350 – 5 units needed
BioMaster 600 – 6 units needed
BioMaster 850 – 6 units needed