Ideal Nitrate Level - The Planted Tank Forum
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post #1 of 3 (permalink) Old 06-20-2015, 12:17 PM Thread Starter
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Ideal Nitrate Level

My Nitrates are always in the 5 PPM range. I am told that low nitrates invite Blue Green Algae. Should I increase my level to about 15 PPM? Have Tetras, Rasboras and Shrimp in the tank.
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post #2 of 3 (permalink) Old 06-20-2015, 01:41 PM
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If it never bottoms out to zero it is always available to plants.
If it drops to zero dosing would be needed.
Really depends on the quantity and type of plants in your environment.
Some plants are claimed to be nitrate hogs.
Others here might know which plants.

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Growing is not that difficult.
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post #3 of 3 (permalink) Old 06-20-2015, 01:53 PM
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Fish and shrimp do not seem to mind fertilizer that raises nitrate. If the current NO3 is from the food you are adding for the fish and shrimp, then you can also assume there is a small amount of phosphate and most trace minerals.
Fish food is low in potassium and iron.

You could put a few root feeder tablets in there, and see if the plant growth improves.
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