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post #1 of 8 (permalink) Old 03-11-2010, 05:54 PM Thread Starter
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co2 and waterchanges

will be getting a fully automated co2 setup and could use some advice. wondering if i set up the controller for a 7.0 ph and my water has a 7.8+ ph how do you go about changing water without causing stress to fish through the ph swing. also i have never used acontroller before so any info would be great..
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post #2 of 8 (permalink) Old 03-11-2010, 06:13 PM
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PH swings caused by CO2 (carbonic Acid) have little affect on fish. When I do a 50% water change, my ph goes from 7.4 to 6.4 approx. and I have never had fish show distress from it. I have had the same Cardinals for over a year and usually it doesn't take much to kill them. The ph swings that stress fish are swings related to bicarbonates and other minerals. More specifically, TDS (total dissolved solids) is what fish are often sensitive to.
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post #3 of 8 (permalink) Old 03-11-2010, 07:28 PM
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post #4 of 8 (permalink) Old 03-11-2010, 07:59 PM
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post #5 of 8 (permalink) Old 03-11-2010, 08:05 PM
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PH swings caused by CO2 (carbonic Acid) have little affect on fish. When I do a 50% water change, my ph goes from 7.4 to 6.4 approx. and I have never had fish show distress from it. I have had the same Cardinals for over a year and usually it doesn't take much to kill them. The ph swings that stress fish are swings related to bicarbonates and other minerals. More specifically, TDS (total dissolved solids) is what fish are often sensitive to.

Yep, same here. I have a bunch of cards and do a 50% water change. Within 10 minutes my ph goes way up without any adverse effects. I've had cards for years under these conditions.
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post #6 of 8 (permalink) Old 03-11-2010, 09:49 PM Thread Starter
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So that is a normal thing. I keep Discus so want to make sure.
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post #7 of 8 (permalink) Old 03-12-2010, 07:30 PM
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Yep, same here. I have a bunch of cards and do a 50% water change. Within 10 minutes my ph goes way up without any adverse effects. I've had cards for years under these conditions.
I thought Long Island had soft water?
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post #8 of 8 (permalink) Old 03-13-2010, 03:18 AM
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