High alkalinity - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 11-09-2011, 01:35 AM Thread Starter
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High alkalinity

Is there a better way to reduce the alkalinity of the water aside from water changes?

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post #2 of 7 (permalink) Old 11-09-2011, 03:47 AM
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How do water changes reduce the alkalinity unless you have something in your tank raising it?

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post #3 of 7 (permalink) Old 11-09-2011, 04:35 AM Thread Starter
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Well dosing prime every WC reduces the alkalinity I assume.... Any suggestions?

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post #4 of 7 (permalink) Old 11-09-2011, 05:03 AM
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Prime has no effect on alkalinity, as far as I know. If you replace part of the water with lower KH water, it will reduce the tank water KH. If you use distilled or RO/DI water for water changes, that will reduce the KH.

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post #5 of 7 (permalink) Old 11-09-2011, 05:09 AM
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Another solution is distilled water to reduce your kh.
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post #6 of 7 (permalink) Old 11-09-2011, 05:21 AM
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Quote:
Originally Posted by Aquahollics View Post
Well dosing prime every WC reduces the alkalinity I assume.... Any suggestions?
Hoppy is right. I overlooked using RO water during water changes. That's one way to lower your alkalinity, but otherwise, it can be sort of difficult. Can I ask why you want to lower KH? It is probably easier to work with what you have than to continually force your alkalinity lower if you are going to be using tap. I would say that using a mix of RO and tap is a good solution, as is just working with what you have. Unless your water is ridiculous, I would just leave it be.

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post #7 of 7 (permalink) Old 11-09-2011, 06:12 AM
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I'm in Fort Worth Texas and with our limestone beds, our water parameters is 1gH 15kH 8.2pH. Because the high alkalinity precipitate out the calcium and magnesium, i found having peat under the substrate helps to lower pH. I do add gH booster to bring up the gH to 6.
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