My Home Page Aquaculture Information Newsletter Photosynthesis Photosynthesis is the process where phytoplankton uses sunlight to convert carbon dioxide into food and release oxygen as a by-product.
Photosynthesis is driven by sunlight.
Water quality factors like oxygen and pH are regulated by photosynthesis. The greatest concentration of oxygen will occur when the sun is the highest between 2 and 3 p.m. Oxygen will be the lowest right before sunrise. In respiration, plants to convert food to energy use oxygen and carbon dioxide is released. Respiration and photosynthesis both occur during the day.