Green water is created by planktonic algae cells suspended in the water. The green water condition in backyard koi ponds and water gardens is typically a symptom of an under filtered pond. The nutrient levels (a.k.a algae food) in your pond are rising faster than the filter system can break them down.
Having considered the above-mentioned factors, you're ready to determine the number of calories you burn while cycling. For example, if you weigh 120-175 pounds and bike at an average rate of 10 mph, you will burn 215-240 calories per half hour. If you weigh 200-250 pounds and bike at the same speed, you will burn 300-360 calories per half hour.
The amount of calories you burn biking in 20 minutes depends on how much you weigh and how fast you cycle. A leisurely bike ride of 10 mph or less will burn fewer calories than cycling faster in a 20-minute period. A 150-lb.