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How to Reduce High Toxic Nitrates Quickly & Efficiently

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Animated Graphic of Rapid Nitrate Reduction
How to Reduce High Toxic Nitrates Quickly & Efficiently
Graphics by Stan Hauter
Many people try to reduce their nitrate levels by performing a series of partial (20%) water changes. This will reduce your nitrate (or any other chemical substance) levels, but it is rather inefficient if the object is to reduce the levels to near zero in the shortest period of time as possible, with the least amount of water. On the other hand, if you reduce the level of water in the tank to 20% of normal and then refill the tank to a 40% level, you have already reduced your nitrate levels by half.

If you then refill the tank to the 100% level, your nitrate levels will be 20% of the original level that you started out at. If, on the other hand, you reduce the 40% water level once more to 20% and then refill the tank, you will end up with a nitrate level of 10% of what you started with. Perform the 40% to 20% reduction once more, and you will end up with a nitrate level of 5% of what you started with. Just think about it for a minute. If you started out with a nitrate level of 100 ppm and used this method, your 100 ppm nitrates would be reduced, in a short period of time, to 5 ppm, which is considered, by most, to be an acceptable level even for corals.

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