I followed one of the links on AC for an "Aquaripure" brand filter that promises to completely eliminate water changes due to nitrate buildup. Anyone have any experience or 'words of wisdom' regarding these. The price seems comparable to a cannister. Seem like you would still need a mechanical filtration system. Seems like a "if it sounds to good to be true, it probably is" kind of thing.
Link: http://www.aquaripure.com/index.htm
Quote from their website:
The Aquaripure filter is a comprehensive biological filter which will completely remove all organic matter and nitrates in an Aquarium. This type of filter is also known as a denitrator, denitrifier, biodenitrator, anaerobic biological filter, or simply a nitrate filter.
Link: http://www.aquaripure.com/index.htm
Quote from their website:
The Aquaripure filter is a comprehensive biological filter which will completely remove all organic matter and nitrates in an Aquarium. This type of filter is also known as a denitrator, denitrifier, biodenitrator, anaerobic biological filter, or simply a nitrate filter.