How much can PH swings hurt most plants? - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 01-05-2014, 09:10 PM Thread Starter
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How much can PH swings hurt most plants?

As the title suggests I'm wondering just how much a PH swings would affect most plants. Is anyone here aware of any particular plants that would be susceptible?

I'm kinda suspicious that my hygro is susceptable but I"m not here to trouble-shoot a particular plant but ask a general question if you know what I mean.

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post #2 of 3 (permalink) Old 01-06-2014, 01:24 AM
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Those who use CO2 are subjecting their plants to a 1.0 pH swing or greater every day, and they do it because the plants grow very well that way - all plants, as far as I know. If you were to vary the water conditions, like KH or acidity from weak acids, it might have a bad effect, but not from Co2 additions.

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post #3 of 3 (permalink) Old 01-06-2014, 02:50 AM Thread Starter
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Quote:
Originally Posted by Hoppy View Post
Those who use CO2 are subjecting their plants to a 1.0 pH swing or greater every day, and they do it because the plants grow very well that way - all plants, as far as I know. If you were to vary the water conditions, like KH or acidity from weak acids, it might have a bad effect, but not from Co2 additions.
Ok, thanks Hoppy. I'm just wondering because I have both DW that eventually lowers PH and water that drops out of the tap. Doing a water change causes my water's PH to go crazy because I'm getting rid of water with tannins and also adding water that will rise and then drop in PH over a few hours. Add all that to the CO2 situations and you have some very irregular PH for about 24 hours.

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