The Planted Tank Forum - View Single Post - seachem matrix bio best ?
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Old 02-01-2013, 05:00 PM   #33
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Matrix is the best de-nitrifying bio media. If you have high NO3 it's probably a good idea, but so are water changes. Whatever gets your planted tank NO3 spec to around 20ppm is good; be it substratpro, lava rock, micromec etc.
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