How Much Sand For Pool Filter? Keeping The Pool Clean

How Much Sand For Pool Filter
pool filter

Pools need a lot of maintenance. In order for you to make sure that the pool area stays clean, you have to make sure that the filter is working properly. Filters are basically used to process all of the water in the pool so you can keep on removing contaminants and ensure that the water is as pure as possible.

Typically, filters make use of sand in order to remove small debris from the water. The most common way to use sand is through a pressure-fed sand filter that contains graded sand. A high rate sand filter is known to be able to remove particulates in the water that is at least 10 micrometers big.

With continued use, the sand inside a filter will actually deteriorate. This is why you will have to replace the sand in the pool filter every 5 or 7 years. You should also know what sand to use and how much to put into the filter so that it will be able to function properly.

Why Do You Have To Replace The Sand In The Filter?

taking pool filter out

The sand in the filter can actually become dull with continued use. If the sand is no longer sharp, it will no longer be able to remove as much contaminants as before. The sand particles can get rounded as it gets rubbed together, this is why most experts recommend that you change it every few years.

The sand can also slowly ball up and the water can also start to make tunnels around the sand, this is why after years of use, the filter might no longer be able to work properly. If this happens, you will see that the water in the pool will still be cloudy no matter how long you run it through the filter.

filtration sand

The backwash cycles will also seem to be shorter. Over time, the sand in the filter can also accumulate too much debris or contaminants. It can collect a lot of hair, skin, oil and even chemicals that will make it harder for the sand to properly filter the water.

To make sure that the pool water stays clear, you will have to make use of the proper filter media. Never use sand for construction purposes. Instead, you should try to opt for quality pool filter sand. You can even use products like Z-Media or other media that are made from volcanic ash or other materials.

How Much Sand For Pool Filter?

changing sand in pool filter

When it comes to figuring out how much sand you need to put inside your pool filter, you should try to check the model of the filter first. This is because many pool filters will need a specific amount of sand so that it can work properly.

On average, small pool filters will need around 150 – 200 pounds of sand. For medium-sized filters, you might have to use as much as 350 pounds of sand. Large pools with large filters on the other hand, will need as much as 750 pounds of sand up to 950 pounds of sand in order for it to work effectively.

filtration sand

In some cases, instead of considering the weight of the sand, you can just try to fill the filter with as much sand as you can but leave a space of at least 6 - 8 inches starting from the top of the filter. There are filter models however, that will require you to leave as much as 10-12 inches of space from the top.

If you do not have the filter’s instruction manual, you can try to look online for more information. If this is not possible, you can buy 3-4 bags of pool filter sand or #20 silica sand depending on how large the filter is, and then slowly add it to the filter while leaving 6-12 inches from the top.


pool filter washing

Changing the sand in the filter is very important simply because it will allow you to process the pool properly. Besides, new sand is more capable of removing contaminants. When changing the sand, always refer to the filter’s user manual so you will know what type and how much to use.

If you do not have it, you can always ask a pool technician to do it for you. But if you want to do it yourself, you need to be very careful of the old sand simply because it can contain a lot of bacteria or organic contaminants. When putting sand, you should also be careful not to clog or damage the filter.

In general, most pools will need around 150 – 200 pounds of sand, while larger pools with bigger filters will need as much as 600 pounds of sand or more. It will all depend on the size of the filter. If you do not have an idea how much sand to put into your specific filter, I recommend that you ask expert advice.

By Emily Taylor

My name is Emily Taylor, gardening is my passion and I’m looking forward to sharing it with everyone. I know that there are millions of people out there want their backyard and garden be attractive just like their front yard, so I am here to help you create your own backyard paradise.

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