RE: PH

["Gregory Nielsen" <gnielsen@andinet.com>]

Mike,

the lower pH is probably due to a buildup of CO2 during the night from plant
and animal respiration. The pH goes up when you turn on the filter and the
circulation helps to get rid of the excess CO2. If you have plants in the
aquarium they can use up the available CO2 in the day and the pH will rise.
These pH swings are common in soft, poorly buffered water.

Greg Nielsen





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