How Long Should A Pool Pump Run?

The length of time a swimming pool pump needs to run for depends on a couple of different factors. The main two are, the amount of water a pool has and the size of the pool pump. The other determining factor is the condition of the swimming pool water.

How Long Should I Run My Pool Pump?

In this article, we are assuming that the pool water is in good condition. That the Chlorine, PH, and Total Alkalinity levels are all within their acceptable ranges. In Summer the total amount of water in a swimming pool needs to be filtered at least once every 24hours. In Winter the pump filtering time can be reduced to half.

Below is a chart that gives different pool sizes in liters, pool pump sizes, and sand filter sizes. Within the chart is the amount of hours to run a pool pump. Look at the pool pump itself to find out the kW rating. There will be a tag or a metal plate attached to the pump with the information stamped on it. To find out how many liters of water are in your swimming pool click on this link which takes you to the HTH website. The information in the chart below is sourced from the HTH website.

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Here’s How to vacuum a pool to waste with a sand filter

Sometimes a swimming pool gets overwhelmed with leaves, algae, and debris on the bottom, which the standard automatic pool cleaner can’t cope with. Or we have a time constraint in which the pool needs to be cleaned. In this post, we will be discussing which is the correct multiport valve position to use when vacuuming a pool with a sand filter.

You don’t want all of that debris to pass through the sand filter and clog it up. Firstly switch off the pool pump. Both the weir and pool pump baskets must be removed, cleaned and refitted.

Just to make sure that they are not already blocked which could cause a restriction in water flow when vacuuming. Check to see that the swimming pool water level is at least half the height of the weir opening. The vacuuming process uses a lot of water.

The Multiport valve has six positions. Filter, Rinse, Recirculate, Backwash, Waste and Closed. Because there is a lot of debris sitting on the bottom of the swimming pool the multiport setting must be on WASTE.

Remember to push down on the handle before turning it to the Waste position.

When the Multiport valve is in the waste position the dirty swimming pool water is going to bypass the sand filter and flow straight out the waste outlet pipe into the garden or drain.

If the Multiport valve is in either the Filter, Recirculate or Backwash position all the debris that is being sucked up from the bottom of the swimming pool will be passing through the sand filter and back into the pool.

The sand filter will quickly get clogged and the smaller debris particles will be pumped straight back via the return jets straight back into the pool. This is a situation you do not want.

Connect the weir cover and pipes to the manual vacuum unit. Switch on the pool pump and continue vacuuming. When vacuuming is completed switch off the pool pump.

Remove and re-clean the weir and pool pump baskets. Replace the baskets. Check the swimming pool water level and fill if necessary. Test and correct the PH and chlorine levels after filling the swimming pool.

Reset the Multiport valve to filter for normal filtration.

How To Clean The Sand Filter In Your Pool

Backwashing a swimming pool sand filter is an important element of pool maintenance. It ensures that swimming pool water is filtered correctly at all times. A sand filter needs to be back-washed once every 2 weeks or when the automatic pool cleaner moves slowly around the swimming pool.

How do swimming pool sand filters work? 

Before learning how to backwash the sand filter, let’s first get to know its main element and how it works. 

Sand as the filter medium:

This natural element has a great capacity to filter water. Today it is the filter medium most used in swimming pool filters and thanks to them the water remains impeccable. 

A Fact to remember: This filtration method is one of the most effective.

How do sand filters work?

  • They transfer the water through the filter distributor from the top to the bottom. 
  • They trap all dirt and any impurities present within the water, due to the small sand particles that the sand is made up of.
  • As the filtration cycle continues, little by little more contaminants are deposited between the sand particles.
  • Finally, when the water entering the filter reaches 10 pounds compared to the water leaving the filter reaching 20 pounds, it is then time to backwash the filter. This difference in pressure can be noticed when observing the pressure meters located on each side of the filter inlet and outlet pipes.

Another fact to remember: The average life span of sand filters are 5 to 15 years.

How To Clean Your Sand Filter

1] Switch off the swimming pool pump motor.

2] Disconnect the automatic pool cleaner or anything else that is connected to the pool weir.

3] Remove and clean both the weir and pool pump baskets. Refit baskets back into place.

4] Set the multiport valve onto the BACKWASH position. Remember to push down on the multiport handle first to unlock it before turning the handle. This prevents the multiport valve seal from being damaged.

5] Check to see that the waste hose is laying in the correct place, as this is where all the dirty water from the sand filter is going to. Also to make sure that the dirty water is not returning back into the swimming pool.

6] Switch on the swimming pool pump and allow it to run for at least 2 minutes or until the water in the sight glass is clear.

7] Switch off the swimming pool pump motor again.

8] Push the multiport handle down and turn it to the RINSE position. This is to recompact the loose sand after the backwash cycle.

9] Switch on the swimming pool pump for 20 seconds.

10] Switch off the swimming pool pump again.

11] Push the multiport handle down and turn it to the FILTER position.

12] Reconnect the automatic pool cleaner to the weir and resume normal filtration and cleaning.

As you can see, sand filters are important regarding pool filtration to be taken care of so your pool can be kept impeccable at all times.

For this reason, it is essential to ensure that the filter is always in optimal condition, and it is very important to clean it regularly. 

Also, doing a backwash to the filter of your pool is not a complicated task nor does it take up much time.

So now that you know how to clean a pool filter, all you have to do is make your pool crystal clear and enjoy it.

How To Raise Low Chlorine Levels In Your Pool

Maintaining the correct Chlorine level in a swimming pool is important. If the level drops too low then there is a possibility of Bacteria and Algae Growth in the water.

The correct level of Chlorine in a residential swimming pool should be between 1-3ppm.

If the level is below 1ppm then there is no sanitizer to fight and prevent bacterial growth, which gives the swimming pool a greenish color and is unsafe to swim in.

How To Raise Low Chlorine Level In Your Pool

A thorough clean out of the pool pump basket and weir baskets, a thorough brushing of the swimming pool walls, steps, ladders, and the floor is necessary to get the dirt and bacteria mixed with the water.

Remove leaves and heavy dirt from the pool bottom. Then backwash the pool for 2 minutes and rinse for 20 seconds. This will clean the filter sand, so it is ready for the main filtering of the dirty water.

Then test and correct the PH level of the swimming pool water. The PH level for a Marbelite Pool should be between 7.2-7.6 and a Fiberglass Pool 7.0-7.2.

If the PH level is less than 7.2 in either a Marbelite or Fiberglass Pool Add HTH Soda Ash.

If the PH level is greater than 7.6 in either a Marbelite or Fiberglass Pool Add HTH Easy Acid.

When the PH level is correct then it is very important to also check and correct the Total Alkalinity of the swimming pool water. Total alkalinity is measured by its concentration in parts-per-million (ppm), and the ideal range is between 80-120ppm.

If the Total Alkalinity is low then Add HTH Alkalinity Up. 1kg of HTH Alkalinity Up should raise the Total Alkalinity by approximately 10ppm.

If the Total Alkalinity is high then Add HTH Dry Acid/Easy Acid. Never add more than 250g of HTH Dry Acid/Easy Acid at any one time.

With both the above levels corrected. HTH Granular and Mineral soft can now be added to the swimming pool water. If the pool water is excessively green and it has a sign of green algae then HTH Shock It can be used instead of or with the HTH Granular.

With the pool pump on and set on filter. Add 3 x the normal dose of HTH Granular plus 1 bag of HTH Shock It. Or just add 1 bag HTH Shock It. Add these chemicals around the sides of the pool in the early evening.

Test and correct the PH levels every 12 Hours until the swimming pool water is clear and the Chlorine Level is between 1-3ppm.