plants have yellowish tinge - The Planted Tank Forum
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post #1 of 18 (permalink) Old 03-25-2004, 07:23 PM Thread Starter
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Hi Folks: I have a 90 gallon tank that is newly planted. All the plants are in 100% flourite. The tops of the plants (the new growth) are looking yellowish. I believe this is an iron deficiency, correct? Why are they showing this already when the flourite is supposed to supply it. Is it a sign of something else that may be missing?? Thanks-
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post #2 of 18 (permalink) Old 03-26-2004, 01:54 AM
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If you are having a iron deficiency the leaves turn yellow become brittle than disintegrate. This would be very unusual for this to be happening this soon. What type plants & how much light do you have?

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post #3 of 18 (permalink) Old 03-26-2004, 02:00 AM Thread Starter
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It is mostly the hygrophylia and watersprite. I have 2 wpg. Could there be too much light and they are getting bleached out. I have a CF with 110w and a dual light strip with 80 w and I was thinking of just using the CF and see if it makes a difference. Good idea or not?? Could the yellowing be something else??Thanks for answering-
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post #4 of 18 (permalink) Old 03-26-2004, 02:29 AM
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You don't have to much light at all...How long has your tank been set up?

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post #5 of 18 (permalink) Old 03-26-2004, 10:34 AM
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Just a passing thought. When my garden plants are looking a little yellowish they benefit from a little epsom salts. Looks very similar to iron chlorosis.

Water sprite......are they planted or floating. If I plant my floaters they drop the wide leaves slowly and grow fine leaves. Then part of the fine growing stuff breaks off and floats and starts growing the wide leaves again and the fine stuff dies. Kind of never ending.
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post #6 of 18 (permalink) Old 03-26-2004, 01:53 PM Thread Starter
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Tank has been planted for about three or four weeks. I did not know watersprite was a floating plant, it had many roots.

As far as epsom salts, how much would I put into a 90 gallon tank. I have that on had as I use it to soak! Thanks-
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post #7 of 18 (permalink) Old 03-26-2004, 01:56 PM
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I don't think you need to be jumping in and dosing salt. Hygrophilia and water sprite are pretty hardy plants and don't need that much care. You should pull your water sprite up and let it float a little, or weigh it down on top of the substrate and let it root itself.

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post #8 of 18 (permalink) Old 03-26-2004, 07:22 PM Thread Starter
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Sorry no camera. Is yellowing the sign of something else possibly?? I have extremely soft water. Is that a problem for some plants? Thanks for helping-
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post #9 of 18 (permalink) Old 03-27-2004, 03:13 AM
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I've found that an iron deficiency comes about very slowly and shows up first in new growth as yellow leaves. Nitrogen deficiency will usually appear within a week or 2 of depleted nitrogen conditions. my bet is that it's a nitogen deficiency. Check out this link for more clues:http://www.csd.net/~cgadd/aqua/art_plant_nutrient.htm

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post #10 of 18 (permalink) Old 03-27-2004, 04:59 AM
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Check your nitrates... as Marcel said. They might be used up, and that's when you see yellow or almost white plant tips, forced to grow by light, but not having nutrients to build up substance.


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post #11 of 18 (permalink) Old 03-27-2004, 07:24 PM Thread Starter
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Nitrates are 5 ppm. I think that could be the problem. How do I add this?? I read about stump remover (ew!) Is that really what I want?? Thanks- Also my water is extremely soft and I read the chart and thought it could also be a lack of calcium and magnesium. How would I add that as well? thanks for all the help. Did not think I would be having problems so soon, I am kinda discouraged...
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post #12 of 18 (permalink) Old 03-27-2004, 09:14 PM
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5ppm nitrate is good, I doubt thats the problem. It could very well be Ca/Mg deficiency. I've never encountered that here with my water. Some crushed coral (for Ca)and epsom salt (for Mg)could probably help. Add these slowly and try to get your GH to 3-5 degrees GH. The crushed coral will also raise KH and therefore PH. Or try some Seachem alkaline buffer for something easier. Try to raise the Gh by about a point per day till you get to your desired level.
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post #13 of 18 (permalink) Old 03-27-2004, 11:06 PM Thread Starter
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Thank you so much. How much epsom salt should I add to a 90 gallon.??Gh is 1 degree and kh is minus (shows nothing on the test).I will have to buy the crushed coral. I have a dug well and the water is extremely soft and acidic. Fish dont mind it but the plants are definately complaining! Thanks for helping-
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post #14 of 18 (permalink) Old 03-27-2004, 11:35 PM Thread Starter
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Marcel: I just looked up Seachem alkalizing buffer. It says that is raises Ph but doesnt mention Gh. does it do that too. This 90 gallon is an angel tank so I like to keep the Ph about 6.6 as that is what the store here has. Thanks again-
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post #15 of 18 (permalink) Old 03-28-2004, 02:56 AM
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I'm sorry fishlady, I made a small boo-boo. Seachem Equilibrium was what I was thinking of. Another similar product is Kent R/O Right. These products are designed to restore R/O water to a degree of hardness. Either one will work for your application. I would try one of these out first till you feel more comfortable adjusting the water with epsom salt and crushed coral.

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