| http://www.w3.org/ns/prov#value | - An aquarium filter, comprising:a canister defining an open top, a closed, imperforate side and a closed bottom, a cover for sealing the open top of the canister, a fluid inlet and a fluid outlet each communicating with a respective region within the canister, a porous filter element located within the canister, a pump including an impeller, the pump located within the canister and in fluid communi
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