Current USA Protein Skimmers are powered by a patent pending paddle-mixing injection system, for the Fission Power Protein Skimmer there is the paddle blade impeller, for the Fission Recireulating Protein skimmer there is the Paddle-Wheel Impeller, and the Fission Nano-Protein Skimmer use’s a submersible venturi pump. The Fission Skimmer violently mixes air with water creating a column of millions of tiny micro bubbles. The impellers unique paddle plates remain rigid during rotation, pushing more water and creating contact time while still hacking those bubbles into a dense from froth. Paddle plate impellers create up to 3 times the amount of micro bubbles and contact time compared to other needle-wheel type skimmers. Two water tight pump unions make cleaning and maintenance easy. The Fission Recireulating Protein skimmer pump can be used in or out of the water. The Fission Recireulating Protein skimmer is designed for in-sump applications only. The Fission Power Protein Skimmer has Two unique installation methods allow for either hang-on or in-sump techniques. Mounting bracket fits virtually any tank with a lip of 1.5" or less and can be secured with integrated nylon screws. Submersible pump is UL listed and safe for use in marine aquariums. Simply connect the pump to the skimmer inlet, adjust the water flow to the correct flow rate and skim-away. The Fission Nano-Protein Skimmer is the worlds smallest protein skimmer, measuring a mere 6.5" high and 2" in diameter.  Powered by an energy efficient air injection pump, the patented Fission skimmer rips bubbles into a vortex foam froth, breaking apart proteins and organics and efficiently removing them from your nano-home.  Easy-to-install, this nano-skimmer packs the power of fission into pint sized perfection creating a safe and clear environment.  Ideal for use with Current 12 and 24 gallon Aquapods.