# What Size Sand Filter For Above Ground Pool?

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Using sand filters is effective maintenance for an above-ground pool. Here a common question is, “ what size sand filter for an above-ground pool?”

Sand filter is utmost effective only when you are using the right size. So, sizing knowledge is must if you want to buy the perfect one.

We have this article ready to answer your question and help you to choose the right sand pool for you.

## What Size Sand Filter For Above Ground Pool?

The size of the sand filter required for your above-ground pool is determined by the shape and size of the pool itself.

As a general rule, choose a sand filter with 1 square foot of filtered area per 10,000 gallons of pool capacity.

**Here, we have given a chart for your convenience, **

Pool volume | Filtered Area | Sand Filter size |
---|---|---|

15500 gallons | 1.5 square feet | 1.6 square feet |

30000 gallons | 3.0 square feet | 3.1 square feet |

35000 gallons | 3.5 square feet | 3.6 square feet |

40000 gallons | 4.0 square feet | 4.1 square feet |

45000 gallons | 4.5 square feet | 4.6 square feet |

## Some Factors To Choose The Right Size Sand Filter For Above Ground Pool

### Determine Your Pool Volume

The only thing you need to know in order to determine the size of the filter you should buy is the volume of water that your pool holds.

Therefore, it is essential that you are aware of the volume of your pool. Without it, accomplishing what we want to do with this method will be extremely difficult.

On the other hand, if you are unsure, you can figure out the volume of your pool through some straightforward elementary calculations.

As most of us are aware, the most common shapes for swimming pools are round, rectangular, kidney, and oval.

The rectangular shape will make the calculations straightforward. But others can be computed with just a few straightforward equations.

You have to start by determining how deep the pool is before we can proceed with anything else.

In most cases, the bottom of swimming pools is uneven, which is referred to as having a “sloppy bottom.”

Therefore, it is necessary for us to determine the average depth.

To accomplish this, measure the depth of the end that is the deepest as well as the end that is the shallowest.

You can determine the average by adding the two depths together.

This is because the deepest part is twice as deep as the shallowest part.

Now that we have that information, we can proceed to calculate the volume of the pool.

#### For Rectangular Pools:

Take accurate measurements of the pool’s length and width. After that, determine the volume of the pool by multiplying the figures together.

Pool volume V = L x W x D

If your pool is rectangular in shape, you will need to divide the shape in half in order to calculate each volume separately.

After that, simply add up all of the values to get the total volume.

#### For Oval Swimming Pools:

Calculate the surface area of the pool by first measuring its radius, which will give you its area.

In order to determine the radius, one must first measure the diameter of the pool while passing through the middle of the pool.

After that, divide that number by 2, because r equals diameter divided by 2.

After that, determine the surface area by multiplying the radius by the formula A = r2, which you can find online.

Where A represents the pool’s surface area, equals 3.14, and r indicates the pool’s radius.

Multiplying the pool’s surface area by its average depth (D) yields the formula for calculating the volume of the water in the facility.

**Volume = A x D.**

#### For Oval Pools:

Take a measurement of the diameter at its shortest point as well as its longest point. After that, multiply the result by the average water depth.

Volume = Shortest Diameter x Longest Diameter x Average Depth

#### For Kidney Pools

Take the shortest width measurement and the longest width measurement, then add those two up. Take a length measurement of the pool.

After that, determine the volume by multiplying the figures with the average depth of the object.

The volume of the pool can be calculated as follows: Volume = (shortest width x longest width) x Average Depth x Length of Pool

After determining the size of the pool in cubic feet, the next step is to convert that number to gallons.

This is essential given that the gallon unit is the standard measurement employed by the majority of manufacturers.

Simply multiplying the volume you determined earlier with 7.48 will get you the correct answer for how many gallons are in a cubic foot.

If, on the other hand, you are already familiar with the size of your pool, you won’t have to worry about performing these calculations.

## Find Out How Much Water Is Flowing

It is important to note that the majority of pool pump capacities are measured in GPM (gallon per minute).

Because we have now expressed the volume of the pool in terms of gallons, calculating the GPM won’t be as challenging as it was before.

As was mentioned earlier, the typical amount of time required for a full filter cycle is between six and eight hours.

The average time spent in a residential pool is 8. Therefore, we will be on the road for eight hours.

Converting the hours to minutes will allow us to get a better idea of what the actual value of GPM is.

To convert from hours to minutes, we multiply 8 by 60. This gives us the actual time in minutes.

**Time = 8 x 60 = 480 minutes.**

After that, divide the total volume of your pool by 480 to get the value for the pump’s capacity.

For instance, if the volume of your pool is 10,000 gallons, the required pump size is 10000 divided by 480, which equals 21 gallons per minute (GPM).

If you intend to use the pool for commercial purposes, you should change the calculation so that it uses 6 hours rather than 8 hours.

## Determine The Number Of Gallons That Will Be Filtered In The Next Eight Hours.

Your pool water can be cleaned in approximately 8 hours by a pool filter that is in good condition; therefore, you will use this figure to figure out the next step in the process.

First, find out how many gallons are in your pool by dividing that number by eight, and then take that number and divide it by sixty.

Figure 60 represents the number of gallons per minute that need to be pumped in order to complete the task within the allotted time frame of 8 hours.

### Set up the additional filter Accessories.

The filter needs to be put in place at this point. You should make use of a stable base because this will lessen the amount of vibration.

In addition to this, make sure that the electrical system is kept under a cover that is impermeable to water.

You will additionally be responsible for the installation of a pressure gage, a sight glass pipe, an air relief valve, and a backwash hose.

## FAQs About Sand Filters For Above Ground Pool?

### Can A Pool’s Sand Filter Be Too Big?

If a swimming pool’s filter is too big, it probably won’t cause any problems. With a smaller pump and a bigger filter, the pump doesn’t have to work as hard to keep the pool’s water clean.

### How Much Does Sand For A Pool’s Filter Cost?

How Much Does It Cost to Replace Sand in a Pool Filter? Most home improvement and pool stores sell pool filter sand, which costs between $25 and $35 for a 50-pound bag on average.

### How Often Do You Change The Sand In A Pool’s Filter?

About every 3 to 5 years, sand should be replaced. This could be longer or shorter depending on how clear the pool stays and how often the filter runs. As the sand gets older, its rough edges wear down and become smooth.

### How Do I Choose A Pool Sand Filter?

The filter’s flow rate must be at least as high as your pump’s, or at least the same. When it comes to pool filters, it’s best to err on the side of bigger so that the filter can handle the power of your pump.

A good rule of thumb is to choose a filter that has at least 1 square foot of surface area for every 10,000 gallons of pool capacity.

## Final Thoughts

Now you have found the answer to the question, “**what size sand filter for above ground pool**?

” Consider the size and shape of the pool when choosing the correct sand filter for your above-ground pool.

Choosing the right-sized sand filter helps improve your above-ground pool’s health and lifespan. It saves money and energy over time.