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    Roman1's Avatar
    Roman1 Posts: 1, Reputation: 1
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    #1

    Nov 8, 2016, 04:23 PM
    Algae growth with supplemental co2
    Hello,

    We are doing a science project testing to see if it’s possible to grow more algae with supplemental co2 (brewer’s yeast, sugar and plant food), than without. Initially (1st 3 weeks) looked promising. Then something remarkable happened. The control bottle (no added co2) grew more algae than the supplemental co2 bottle. A complete reversal at about week 4. . We are trying to figure out why this would occur. Could you give some intel?

    Thanks,
    Roman Nasif
    7th grader at Khalsa Montessori School
    Tucson, AZ
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
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    #2

    Nov 10, 2016, 02:47 PM
    You would really need to know CO2 concentrations. Even with "No added" CO2 you do have some in the ambient air. The concentration of added CO@ may inhibit growth if too much exists. Read this:

    https://scienceblog.com/522/climate-...-plant-growth/
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