Red plants are frustrating. - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 07-09-2006, 03:36 AM Thread Starter
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Red plants are frustrating.

I go buy red plants in the LFS and when I come home they turn green. I bought this kind thats a rotala and exactly looks like rotala green when it turns green. I heard that lower nitrates cause red plants to lighten up but so far I don't have much luck. People also say that light intensity is also an issue, I have 3WPG and I still don't have red plants.
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post #2 of 9 (permalink) Old 07-09-2006, 04:06 AM
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I'm with you on this Mike, I have a hard time getting my plants to color up as well. There are many factors as to why our plants aren't turning the color it should be. From what I know, it has to do with nitrates, iron, and lighting. Lowering nitrates to 5-10ppm and increasing iron with good lighting will color your plants up. If someone could give some additional information, that'll be great!
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post #3 of 9 (permalink) Old 07-09-2006, 04:49 AM
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thats why it makes the hobby interesting. haha O_o

i would say bump your..nitrates up, i think around 10ish is good for best reds

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post #4 of 9 (permalink) Old 07-09-2006, 05:06 AM
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I get good color form dosing N to about 10-15 P to 2-3, flourish and iron, about 1 ml per 10 gallons. I also have about 3 wpg


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post #5 of 9 (permalink) Old 07-09-2006, 05:30 AM
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At least with my experience its the light intensity. I have rotala indica and only the tops of my plants turn gold and red once its closer to the surface. The bottoms of the plants always seem to be green. I'm at 3.8 wpg I dose iron, nitrates, and potassium twice a month after water changes.
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post #6 of 9 (permalink) Old 07-09-2006, 09:55 AM
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Quote:
Originally Posted by Wei
At least with my experience its the light intensity. I have rotala indica and only the tops of my plants turn gold and red once its closer to the surface. The bottoms of the plants always seem to be green. I'm at 3.8 wpg I dose iron, nitrates, and potassium twice a month after water changes.
If this were true why is it that folks had very nice reds, excellent color pre 1996?

Almost all the Dutch tanks, pics from here and Europe goign way back used NO FL's at 1.5, maybe 2 w/gal.

3.8 PC lighting is a lot more............and I've gotten good reds, as good as any with high light have at 2-2.2 w/gal with NO FL's.

Red tips are nothing new, this is because the Chl a has not formed in new tissue. Some plants have red pigments before the Chl a is added.
We see red tips as a result.
But the faster the growth rate.....they more % of the tips will be Red.
You can do this with adding plenty of nutrients and CO2, and also adding more light, but light alone is just part of that equation, not all of it.

Increased growth rates are a fuction of more than mere light alone.........

Low NO3 and high light is not a good comination.
Low light and low NO3 are a good combo, it's much easier to do and maintain a low level of NO3 and get that red stressed look people seem enamoured with. You can get some degree more reddish color with higher light in some cases. But there is a trade off balancing the low NO3 as that increases.

Chl a is heavy in Nitrogen, so limiting that, will induce red color(reduces the Chl a content in the leaves=> thereby showing more of the Red pigment that's noramlly masked by the green Chl a pigment). This will cause color changes faster and more dramatic in some species than lighting also.

Regards,
Tom Barr




Regards,
Tom Barr
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post #7 of 9 (permalink) Old 07-09-2006, 06:12 PM
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I can generally get more or less red by simply incresing or decreasing the IRON that I dose. But I found that the less IRON I dose the less I hve algae, and I still get plenty of RED. So I can only assume that I already have Iron in my Tap.

dave

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post #8 of 9 (permalink) Old 07-09-2006, 06:50 PM
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You could always get some C. wendtii "red", or C. beckettii, or barclaya, etc... no extra effort needed there...

Last edited by endparenthesis; 07-09-2006 at 10:11 PM.
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post #9 of 9 (permalink) Old 07-09-2006, 07:49 PM
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i have 2.5wpg over my 20 long. i just started dosing flourish trace about a month ago (tank is about 6 months old) with sand substrait and 30-40ppm nitrates just from fish waste, and all my red/pink plants are gorgeous. i have sunset hygro that has beautiful pink leaves with green/gold veins and rotala rotundifolia that is also lovely pink. the red ozelot sword i used to have in the tank was a deep burgandy.
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