TOM TM1351 Aquarium RP3 Plus . Rapids Pro Filter with Auto Fill System, 700gph pump. KollerCraft is highly regarded for supplying superior quality, innovative pet products and reliable service. This Rapids pro Filter"s distinctive design make this state-of-the-art filter extremely efficient. Delivering complete biological filtration while greatly increasing beneficial gas exchange as water trickles over exposed bio-balls and highly porous Sintered Glass Cylinders. Resulting in the rapid oxidation of ammonia and nitrate. Comes with Auto Fill System (TM1353)