Nitrates and R. Indicia - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 09-24-2004, 09:10 AM Thread Starter
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Nitrates and R. Indicia

During the breaking in month or two of my tank, the R. Indicia had a gorgeous red color to it and grew fast. Now that the tank is settled and I have started to dose macros, the plant pearls EVERYDAY but the color has faded.

I have read that keeping the Nitrates low (around 5ppm) will help the plant keep its color???? Is this true?

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post #2 of 7 (permalink) Old 09-24-2004, 12:51 PM
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I have had experience with R. Indica. For the first several weeks I had it I didn't dose any nitrates at all, so they were about 0. Even with out N this thing still grew like a weed and it had a stunning red/pink color. Then after I started dosing nitrates it went green.
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post #3 of 7 (permalink) Old 09-24-2004, 09:35 PM
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A lot of the red plants are like that. Lower nitrates create a redder color.

Mike

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post #4 of 7 (permalink) Old 09-24-2004, 11:41 PM
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Yup, certain plants will become redder as the tank becomes lean with nutrients (both broad and narrow leaf L. repens for one).

Eric


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post #5 of 7 (permalink) Old 09-25-2004, 12:26 AM
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Phosphates and iron will also play a role, but not nearly as much as nitrates. Lower phosphates and higher iron will help create a blood-red color. Ironically, the red color in these plants is actually a symptom of nutrient deficiency...kinda like being intoxicated with alcohol is actually a symptom of alcohol poisoning. Anyhow, keep the phosphates low, .1-.5ppm, the iron high(er) and you should have red results.

I grow both of these plants (R. Indica & L. Repens), and I always know when my nitrates are getting low because they will turn red. They don't turn a deep maroon because I keep high phosphate levels, about 1.0ppm.
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post #6 of 7 (permalink) Old 09-25-2004, 12:35 AM
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At the time my R. Indica was pink/red my phosphates where greater then 2ppm, and of course nitrates 0. I did notice they turned deep maroon red when phosphates dropped below 0.5ppm for me.
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post #7 of 7 (permalink) Old 09-25-2004, 01:35 AM Thread Starter
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hmmp, kind of a double edged sword now isnt it???

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