how can i make water more acidic?

i am trying to prove that plants in acidic water produce more oxygen gas than ones in alkaline . how can i make water more acidic ? and will citirc acid and other weak acids be enough to prove my hypothesis to be true

By: gloria

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This entry was posted on Sunday, May 30th, 2010 at 7:23 pm and is filed under Botany. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

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