Why ortho-phosphate test is important?

Question

ortho-phosphate (ascorbic acid reduction method) test

Answer 1

Because ortho-phosphate is a plant nutrient. Water plants and algae grow explosively fast when they absorb phosphates. Because of this fast growth, they use all the oxygen in the water at night time, causing fish and plants to die. These remains are broken down by bacteria that also use oxygen. In the end, everything in the stretch of water dies. Testing for phosphates is important to prevent such levels from being reached.