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> How essential is absolutely steady pH?
post Jan 6 2015, 02:01 PM
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neutrinoman

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Maybe not so much: see EFFECTS OF DIURNAL FLUCTUATIONS AND RAPID PH CHANGES ON AQUATIC LIFE in this article.

Not to say big swings are ok in a tank situation, since there are other factors like pH effects on ammonia, nitrifying bacteria, redox, etc. but ime changes of a few tenths within their acceptable range aren't a big deal.

Truth be known, a lot of tanks probably vary a bit day to night, between water changes, etc., anyway. Not to say there can't be very sensitive species that are less tolerant of changes than others.






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