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Joined: Nov 2007
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Lunker
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Lunker
Joined: Nov 2007
Posts: 4,924 Likes: 1004 |
If the BG are thriving, it sounds good to me!
pH does vary on time of day and also varies seasonally.
Were all of your samples taken at the same time of day?
Dissolved CO2 is one of the components that lowers the pH. As your photosynthesizing organisms are thriving, they tend to utilize the dissolved CO2 and your pH will increase.
Just throwing out some guesses for your observed results.
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