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Old 11-15-2003, 12:00 PM   #1
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Has anyone tried this, is it basically "fancy" lava rock? Product says: Matrix™ is a high porosity biomedia that provides efficient biofiltration for the removal of nitrogenous waste. Matrix™ is a porous inorganic solid about 10 mm in diameter. Each liter of Matrix™ provides as much surface (<162 m) as 40 liters of plastic balls! Plastic bio-materials provide only external surface area, whereas Matrix™ provides internal macroporous surface area. These macropores are ideally sized for the support of nitrifying and denitrifying bacteria. This allows Matrix™, unlike other forms of biomedia, to remove nitrate along with ammonia and nitrite, simultaneously and in the same filter. Matrix™ is completely inert and will not breakdown. It need not be replaced.
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Old 11-15-2003, 06:28 PM   #2
Are these real?
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Of course it is great stuff... but assuming you have a heavily planted, moderately stocked tank, the questions are: 1) Do you need biological filtration at all? You do need water movement and perhaps mechanical filtration, but all of that plant surface area and the fact that plants love to eat ammonia makes that a questionable expense, and 2) Do you want bacteria that reduce NO3? Don't know about you, but I have to add NO3 once or twice a week so it doesn't go to zero, and I would not appreciate further reduction by bacteria in my advanced bio matrix media.

For a non-planted tank, it is probably very useful...
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Old 11-17-2003, 11:09 PM   #3
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I use it in place of the over priced Eheim substrat. It appears to be the same stuff and seems to work just as well.

As for the need for a filter in a planted tank, if you can maintain a perfect balance of plants, nutrients, fish and fish food then don't need a filter. All you'd need is a circulation source. As for me, it is better to have a filter and not need it than to need one and not have it.
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