The "D-1" is a high-speed filter designed to filter aquarium water to an extremely pure state. It is so designed as to operate as a full time filter. However it may be used in cooperation with other filters such as "undergravel filters" and in conjunction with other "outside" filters. It is wholly compatible with all known filters and may be used to aid these filters in keeping a healthy, well-balanced aquarium. Used properly, your Diatom filter will eliminate the need to "tear down" or disassemble your aquarium in order to clean it.

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