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Old 11/09/2017, 09:39 PM   #23
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Originally Posted by Subsea View Post
Not quite. As algae use bicarbonate & carbonate from the water, it consumes the dissolved co2 gas in solution. This in turn due to “partial pressure law” allows more atmospheric co2 to enter the water.

You are carbon dosing, nature’s way.
Yes; I've since learnt from the guru Farley that the alkalinity doesn't fall because the hydroxides that remain after the carbon atom is removed via photosynthesis instantly take up another carbon atom. Its like when using kalkwasser (calcium hydroxide); the hydroxide is what raises the alkalinity.

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