The PhosBan Reactor 150 is designed with the upflow principle to achieve the
most efficient use of PhosBan® or other chemical filter media. By pushing water
from the bottom upward through a dispersion plate, it forces an even
distribution of water through the media, and prevents channeling. It can be
mounted hanging on the back of the aquarium or below the aquarium. Hose barb
connections are for 1/2 inch i.d. tubing. Includes 1/2 inch barbed ball valve
for flow control, and hose clamps. Use with any pump having a capacity between
100 and 250 gph, but regulate the flow rate to the recommended 20 to 30 gallons
per hour with the included ball valve.