Editorial Reviews:
Product Description
An easy, quick filtering water polishing pressure filter. Considered by most hobbyists as the best diatomaceous filter, System 1 can be used in Freshwater and Saltwater aquariums. System 1 fits most aquarium rims. With no hoses or valves to adjust, System 1 polishes the water by filtrating it through a DE Filter surrounded by Preemo-Clean, a super-fine diatomaceous earth medium, that works with the DE Filter to produce truly amazing results! Preemo-Clean sold separately.
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