Details
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E3 Gallon | E10 Gallon | E20 Gallon | E40 Gallon | |
Aquarium Size | Up to 3 Gallons | Up to 10 Gallons | Up to 20 Gallons | Up to 40 Gallons |
Replacement Cartridge Size | X-Small | Small | Medium | Large |
Filtration Type | Chemical | Chemical, Biological, Mechanical | Chemical, Biological, Mechanical | Chemical, Biological, Mechanical |