Light-dependent reaction. In the light-dependent reaction, light energy from the sun is used to split water (photolysis). which has been taken in by plants. Water, when broken, makes oxygen, hydrogen, and electrons. These electrons move through structures in chloroplasts and by chemiosmosis, make ATP.
Usually, we tell pool owners that between 8 and 12 hours is a good rule of thumb. Many people want to run their pool filter system only at night in order save on electricity during off-peak hours. That's not a bad idea, but it's not the best.
Steps. 1  1. Use this equation: (Pool Volume Ã· Filtration rate) x 2 = Hours to run filter. This will tell you how many hours to run your pump to filter the water a full 2 times. 2  2. Know the volume of your pool. How long you run the filter depends on the size pool to filter ratio. 3  3. Determine the flow rate of the pump.