Two Little Fishies PhosBan Reactor Replacement Foam Discs Fits Reactor 150
PhosBan Reactor 150™ Replacement Foam Disks Black reticulated foam
sponges used to replace the original parts from the PhosBan Reactor
150. These replacement sponges may also be used for dividing the column
in a reactor to segregate different types of chemical filter media,
such as activated carbon, PhosBan®, or adsorption resins. Packaged as a
set of two.