09-29-2007, 09:59 AM
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The pump is an Aquarium Systems Mini-Jet 606 and I do not recommend any other pump as I have chosen this pump specifically for the Aquaripure. They are very small yet reliable and have the exact amount of power appropriate for the Aquaripure. If you do not live in North America then you will need a pump rated 300-450 liters per hour with a maximum pumping height of 100-125 cm. Being a slow flow filter solids really do not get into the filter. You want to keep the pump relatively clear of inorganic sediment but itís not much of a concern. All organic solids are completely broken down and so organic solids are not a concern. I had an Aquaripure used in a heavily stocked aquarium for two years and then I took it apart. There was only a very, very fine dusting (nanometers) of what looked and smelled like silt on the bottom. It would have taken more than a lifetime for it to build up to any appreciable level.