Old tank Syndrome- Extremely High NITRATES - Page 3 - The Planted Tank Forum
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post #31 of 41 (permalink) Old 08-21-2020, 12:20 AM Thread Starter
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Quote:
Originally Posted by Kubla View Post
Post #4 He tested it.

Bump: I was a lot more comfortable with the results of my API nitrate test after calibrating it. Kind of a pain but it was helpful. I was also dealing with high nitrates so I quit dosing it. Dropped the potassium nitrate in my EI dosage and starting using potassium sulfate.
Really, I thought about doing the same but my hesitation is that the dosing would be out of balance. By eliminating KN03, did you increase the K2S04 quite a bit as well as the KH2P04, or keep it the same? Did the phosphates spike as a result? I do have a high phosphate issue as well.
I'm most likely going to continue with PPS Pro, but this is good to know. Thanks for sharing. Brian
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post #32 of 41 (permalink) Old 08-21-2020, 05:58 PM Thread Starter
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What about Potassium Chloride? I saw a Youtube video on how to make it and the amount to use. GLA appears to not have it and I have contacted them about it. Anyway, just wondering if anyone has an experience with dosing the dry version of it? I would like to find an alternative to Potassium Nitrate besides Potassium Sulfate. Plants have a potassium deficiency and other issues too. Thanks. Brian
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post #33 of 41 (permalink) Old 08-21-2020, 06:18 PM
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Potassium chloride is sold in garden centers and hardware stores as "Muriate of Potash", with a 2-pound bag selling for $10-$15. I once used it, but switched to KNO3 and KH2PO4 and have not experienced a potassium deficiency.
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post #34 of 41 (permalink) Old 08-22-2020, 01:22 AM
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I wouldn't use KCl. It's almost a 1:1 K to Cl ratio, which may cause an undesirable build-up of chloride over time. depending upon where you want your ph/KH, you can use KHCO3 or K2CO3. Is there a reason that you don't want the sulfate form K2SO4?
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post #35 of 41 (permalink) Old 08-22-2020, 03:39 PM Thread Starter
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Originally Posted by Deanna View Post
I wouldn't use KCl. It's almost a 1:1 K to Cl ratio, which may cause an undesirable build-up of chloride over time. depending upon where you want your ph/KH, you can use KHCO3 or K2CO3. Is there a reason that you don't want the sulfate form K2SO4?
Last night I did more research and basically decided against KC1. I will just add more K2S04 and see what happens. Also, ordered Seachem Potassium for an as needed basis since it contains no Nitrates or phosphates. Thanks all for your help, looking forward to getting my tank back online.
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post #36 of 41 (permalink) Old 08-28-2020, 03:07 AM Thread Starter
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Looking pretty good, nitrates are a lot lower and the last 50% WC was 2 days ago, I'm back to dosing adding more Potassium Sulfate and no Potassium Nitrate, and all the other micros/macros. Thanks
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post #37 of 41 (permalink) Old 11-15-2020, 11:24 PM
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I had same issue with Nitrates and someone recommended Pothos and it was a game changer for me. My Nitrates went from 160ppm to 40-60ppm within a month
post #38 of 41 (permalink) Old 11-16-2020, 12:00 PM
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As others have said, water changes and plants reduce nitrates. There is no media that reduces nitrates, as proven on the web, universities, government test, independent chemist and manufacturers themselves, period.
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post #39 of 41 (permalink) Old 11-16-2020, 03:08 PM Thread Starter
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That's true, just a way to minimize the nitrates that go into the aquarium. My tank is doing much better now..
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post #40 of 41 (permalink) Old 11-16-2020, 06:25 PM
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I'd love to see a picture of the tank and how the plants are doing and how densely planted everything is.

anything struggling or getting at on of algae?

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post #41 of 41 (permalink) Old 11-16-2020, 11:47 PM
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Quote:
As others have said, water changes and plants reduce nitrates. There is no media that reduces nitrates, as proven on the web, universities, government test, independent chemist and manufacturers themselves, period.
Interesting seeing so many saying this just in this thread alone.

The first thing we learn in this hobby is about beneficial bacteria. The little invisible dudes living in filters and elsewhere, the dudes that actively remove waste coming from fish and plants. By doing so they purify water. And yes, potable tap water is purified by these organisms also. Complete biological filtration cycle removes nitrogen out of water.

What we often read about biological filtration is that nitrate NO3 is the final product. True if the filtration is incomplete. When it is complete then nitrate NO3 is removed, as nitrogen gas. The first process is nitrification and the second denitrification.

To achieve denitrification we need the right filtration media. The usual small ceramic rings can support the first cycle but not much the second. Larger components without openings can support both cycles. As an example MarinePure Media or ordinary garden lava rocks.

When I setup canister filtration with lava rocks my NO3 dropped 3 4 ppm a day, it removed 21 28 ppm of NO3 a week. So if you want to learn about nitrate NO3 removing bacteria take a long vacation because there are tons of studies about them.
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