The fluidized gas bed is up to 100 times more efficient than passive reactors. Ideal for cylinder or yeast generated CO2. Serves any sized tank up to 200 gallons+ Super easy set up, no connection needed to existing filters, just attach the CO line and plug it in. Maintenance and cleaning is a snap without connections to existing filters. Smooth, even 2 dia. discharge flow keeps more CO2 in suspension for longer. Night Spikes are easily controlled using an inexpensive plug in timer. Rugged heavy duty construction, Chamber guaranteed 1 year against defects in material and workmanship, Pump guaranteed for six months by Rio.