Imagine a warm, sunny day – perfect for a refreshing swim in your backyard pool. As you’re about to dive in, you notice something amiss. There’s sand at the bottom of your pool, and it seems to be blowing out from the pool filter. This occurrence, often referred to as ‘pool filter blowing out sand,’ can turn your perfect day into a messy inconvenience.
So why does this happen? Well, it could be due to a variety of reasons. Perhaps your pool filter has some damaged components, or maybe the sand in your filter isn’t right for the job. While it might seem like a daunting problem, don’t worry. Understanding why your pool filter is blowing out sand and how to tackle it is easier than you might think. This simple guide is designed to enlighten you about the possible causes and practical solutions for this peculiar issue.
In the following sections, we’ll dive deeper into the various aspects of this problem, aiming to provide you with the knowledge you need to prevent your pool filter from blowing out sand and keep your swimming sessions sand-free and enjoyable.
Why Is my Pool Filter Blowing Out Sand?
Now, let’s delve into the crux of the matter – why exactly is your pool filter blowing out sand? Unraveling this mystery necessitates an understanding of various factors and conditions. Several culprits might be at work, some more apparent than others.
The Age of the Filter: One key player in the ‘blowing out sand’ predicament could be the sheer age of your pool filter. Just like any other device, a pool filter is not eternal. Over the years, wear and tear take their toll, resulting in potential malfunctions. Components become weak and start failing, leading to the dreaded ‘pool filter sand’ scenario.
Broken Components: The pool filter blowing out sand can also be a symptom of broken or damaged components within the filter. Among these could be a cracked lateral or a broken standpipe. These parts, though small, play a significant role in the proper functioning of the filter. Damage to any of these can lead to sand escaping into the pool.
Issues with the Multiport Valve: The multiport valve, another essential component, can also be a factor when the pool filter starts blowing out sand. If the spider gasket inside the valve is worn out, it can allow sand to bypass the filter and end up back in your pool.
Incorrect Size of Sand: The ‘blowing out sand’ issue could be due to something as simple as using the wrong size of sand in your filter. Not all sand is created equal, and using the incorrect size can lead to it escaping the filter and finding its way into the pool.
How Do I Get Sand Out of My Pool Filter?

After gaining insight into why your pool filter may be blowing out sand, it’s natural to wonder – what next? How can you remove the sand that’s found its unwelcome way into your filter? Here are a few essential steps you can take.
Remove and Clean the Filter: To start the sand-removal process, it’s crucial first to remove and clean the filter. Yes, this might be a bit labor-intensive but remember, taking the time now will save you from further headaches down the line.
Perform a Backwash: Next in your arsenal of sand-fighting tactics is a procedure known as ‘backwashing.’ This essentially involves reversing the flow of water through your filter to flush out any trapped debris, including that pesky pool filter sand.
Rinse After Backwashing: Don’t stop at backwashing. It’s vital to follow it up with a thorough rinse. This ensures any lingering sand or debris, dislodged during the backwash, is effectively removed.
Inspect and Replace Broken Components: Remember those broken components that might be causing your ‘blowing out sand’ issue? Now is the perfect time to inspect them. Look for any visible damage to the laterals and the standpipe. If you discover any broken parts, it’s time to replace them.
Use Correct Sand: Last but certainly not least, make sure you’re using the correct size of sand in your filter. It might seem like a minor detail, but using the wrong size of sand can cause significant problems, including the ‘pool filter blowing out sand’ conundrum.
Getting sand out of your pool filter may seem like a daunting task. But with the right approach and a bit of elbow grease, it’s an issue you can effectively tackle. This step-by-step guide can serve as your roadmap, leading you to a sand-free, enjoyable pool experience.
Can You Put Too Much Sand in A Pool Filter?
Now, you might be wondering if adding an extra amount of sand into your pool filter could be a solution to prevent it from blowing out sand. The simple answer is – no, this strategy might backfire.
You see, overfilling the filter with sand is not the best of ideas. It can create undue pressure inside the filter tank. This could lead to compromised performance or even damage to the internal components of your filter, causing the issue of ‘pool filter blowing out sand.’
So, what’s the optimal level of sand for your filter? The magic lies in maintaining the correct amount of sand. Too much or too little, both can cause problems. Make sure to follow the manufacturer’s guidelines for the appropriate level of sand.
On top of the right quantity, using the correct type of sand is just as crucial. Pool filter sand is specifically designed to trap debris without obstructing the flow of water. Using the wrong type or size of sand could lead to various issues, including your filter blowing out sand.
Lastly, remember to keep an eye on your filter’s performance. Regular monitoring can help identify any potential issues early on, preventing more significant problems in the future.
Remember, balance is key in maintaining an efficient pool filter. Too much sand can be just as detrimental as too little. So, ensure you’ve hit that perfect sand level for an optimal pool filter performance, without the worry of it blowing out sand.