For example, a minimum wage of $10 per hour will have no effect for workers whose marginal productivity in a given line of work is greater than $10 per hour. The legal supply and demand remains unchanged for such labor.
One way to keep control of the time you run the swimming pool pump is to run it several times a day for short periods of time. If you want to activate the pump once a day, start with six hours, but never go lower than five hours, especially in the summer. If your pool is in constant use, you may need to run the pump for up to eight hours per day, frequently checking the water clarity and chemical balance.
run the pool pump long enough in the summer most pool pumps have to run a minimum of eight hours a day to keep an average size 15000 to 20000 gallon pool clean another common recommendation is that you run the pump one hour for every 10 degrees or 10 hours for a 100 degree day but this depends on the size of your pool and equipment