Two Little Fishies PhosBan Reactor 150 Replacement Foam Disks, 2 Pack

These foam disks sit above the dispersion plates of a Two Little Fishies reactor to support the media. Replace them when they wear out.

• Set of 2 foam disks
• Fits PhosBan Reactor 150
• Also fits the Little Reactor
• Support filter media inside the reactor column

Swap them in during routine reactor servicing.