Bottom aquarium filter

Claim 1

A bottom aquarium filter for an aquarium tank having contaminated and decontaminated water therein, said filter comprising in combination a container havinG an inlet compartment in fluid flow relation with said tank and a filtration compartment in fluid flow relation with said inlet compartment, said filtration compartment adaptable to contain a mass of filtering material and having opening means for the ingress of air into said filtration compartment and egress of decontaminated water out of said filtration compartment, said inlet compartment having inlet means comprising an inlet in the lower end of the compartment thereof above aquarium bottom particles through which contaminated water from the tank may flow and an air stream supply means disposed in said container which directs ingressed air from said opening means into said filtration compartment thereby causing contaminated water from said tank to flow through said inlet into said inlet compartment and therefrom into said filtration compartment where said contaminated water is substantially decontaminated by said filtering material before being egressed through said opening means into said tank and wherein said container has a bottom wall formed with a portion thereof elevated upwardly of the remainder thereof, a partition extending upwardly from said bottom wall which separates the elevated portion of said bottom wall from the remainder thereof and forms said inlet compartment in fluid flow relation with said filtration compartment, said container also having a front wall, said partition extending upwardly from said bottom wall and merging into said front wall, openings in said bottom wall forming said inlet and in said front wall and venting means associated with said filter.