Yes, a pump can be too big. It needs to be properly sized for the plumbing and filter.
It isn't recommended that you use a bigger pool pump unless the pool already has an undersized pump installed, as the filter will not operate properly. Most residential pools will require a 1/2 to 1 horsepower pump. Though, the pool pump size must match the pool's plumbing size and the pool filter's flow rate.
A huge swimming pool pump needs a similarly huge filter. If you don't buy a filter to match, you could end up damaging both components. Pump cavitation can cause bubbles in the pump to burst with undue force and cause damage to the impeller and/or other internal components.
Too large of a pump can cause poor filter performance and even damage it, if the filter is not also oversized accordingly. Another possible consequence is pump cavitation in which bubbles form in the water inside the pump and then burst with great force, resulting in damage to the impeller and other internal parts.
A pool pump that is larger than needed has a more powerful motor and circulates water at a higher flow rate. This uses significantly more energy to pump the same amount of water and puts additional stress on your pipes and filter, meaning you'll need to replace them sooner.
A 15,000-gallon pool needs about 20 GPM output if we want to run it 24 hours per day.
If you are building a new pool, you have the option to go with pretty much whatever horsepower pump you want as long as it meets the minimum requirements of your pool and is properly sized for the filter and plumbing.
Divide the pool volume by the number of hours that you would want the pump to be running, so that would be 65,947.5 divided by 6. This would give you 10,991 which means your pump should be able to turn around this much water in 6 hours.
Really, the only way you can go too large on a filter is if the power of the pump is not sufficient to properly backwash the grids. If you are not going to backwash, then this is not really a problem and the VS will have plenty of power to coat the grids and to backwash them anyway.
As long as the filters are the same as each other you can plumb them in parallel, as you describe, and it will work.
Pool gallonage x 2 (the recommended number of cycles in a day) ÷ daily hourly run time ÷ 60 (minutes in an hour). So, for a 30,000-gallon pool that runs continuously (24-hours), the formula is: 30,000 x 2 ÷ 24 ÷ 60 = 41.6 or rounded up it's a 42 GPM minimum flow rate.
The rule of thumb is generally 8 hours, although it could be anywhere from 6-12 hours, depending on your pool's size. Each pool is unique, so to keep your pool pump efficient and effective, you need to figure out exactly what your pool's turnover rate is.
It's best to run your pool pump during the day
Not only does sunlight give fuel for algae to grow, it also destroys your pool chlorine and this is why you should always run your pool during the day!
For pools up to 24 Ft Round, use a 1 HP pool pump. For pools over 24 Ft Round, we recommend using a 1.5 HP pool pump.
The maximum flow into the pump will be 73 gallons per minute for each intake line. The maximum flow into the pump is 42 gallons per minute for each 1.5 inch intake line.
Hayward Super Pump (1.5hp)
This product by Hayward is a 1.5hp pool pump designed to pump up to 90 GPM in most pools. It requires less maintenance and is highly efficient.
Chemicals that you add to your pool while the water is circulating don't need to be recirculated; they will stay mixed even if you don't pump the water continually. Although it's generally recommended that all the pool water undergo filtration every 24 hours, the pump does not need to run all the time.
One of the most significant consumers of energy in homes with swimming pools are pool pumps, which keep pools clean by circulating water through filters. Pool pumps can consume 3,000 to over 5,000 kWh per year.
If your pool pump manufacturer has declared your pump is rain safe, you can leave it on in rainfall. Nevertheless, during a thunderstorm, it is highly recommended that you switch off and unplug your pool pump to prevent any costly and irreversible damages to your pool equipment.
The size of your pool, the efficiency of your pump and filter, and how dirty your pool is are just some of the factors you need to consider. Nevertheless, most pool cleaning professionals would advise against running a pool pump for more than 8 hours a day.
The filtrations system can operate at low water flow with typical motor speeds around 1000 RPM or less depending on the size of your pool and how long you want to run the pump. Suction cleaners typically run at around 2200-2400 RPM.
Even if you have your pool covered, some debris may still get in it during the winter. For this reason, you should consider running your pump on occasion whenever the outdoor temperature is between 35 and 65 degrees. Around four to six hours should be sufficient to remove debris and help promote good circulation.
Inground equipment can sometimes be used on aboveground pools, but many times it is too large or too powerful, and could damage other equipment, or the pool itself.
Stay close to the pool
Shorter pipe runs = less work for the pump which extends the life of the pump and uses less electricity. Our projects typically average a distance of 20–40 feet from the pool to the equipment, but as stated earlier, much longer runs are sometimes required.