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#6
01-04-2008, 04:04 PM
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In the past, I have measured the dissolved oxygen level of my water with no lighting and then with only 96W of actinic light for an hour and the oxygen meter showed a 0% increase in oxygen. However, as soon as I turned on my regular PC bulb or my MH bulb, oxygen levels increased significantly within the hour. If the byproduct of photosynthesis is oxygen, then one might conclude that a 96W actinic PC bulb resulted in little or no photosynthesis.
Last edited by Samw; 01-04-2008 at 05:32 PM. 
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