Biocentric Energy Holdings, Inc. (BEHL)

[seedseller]

One can get very technical very quickly, but there are several proceses at work here with varying levels of CO2 and oxygen in water with algae growth. First is simply the levels of the two gasses dissolved in the water. The water in a pond or PBR will have higher levels of oxygen during the day and lower levels of oxyten at night. This is because of the way aquatic plants work. I don't think the levels of CO2 change as rapidly as the oxygen.

During the day sunlight works with the first steps of photosynthesis to split oxygen from the water--which is released as oxygen gas. The hydrogens from the water to carry chemical energy to the second stage of photosynthesis which is where CO2 reacts forming glucose, oil, etc.

Oxygen is produced only when there is light shining on the plants--during the day. CO2 is consumed any time whether light is present or not.