Having a sparkling clean pool during the summer season is every owner’s dream. The heart of this crystal-clear water lies in your filtration system, and more specifically in the sand of your filter. Although it works tirelessly to retain impurities, oils and debris, the sand inevitably ends up wearing out. But how do you know when it is time to act?
Here is everything you need to know about the ideal time to change the sand in your pool filter in order to keep clear water all summer long.
How Often Should You Change the Sand in Your Pool?
As a general rule, experts recommend changing the sand in your filter every 3 to 5 years.
However, this duration is not absolute and may vary depending on several factors:
Pool traffic: A very busy pool generates more body oils and sunscreen residue.
The direct environment: The presence of many trees, insects or exposure to strong winds will accumulate more organic debris in the water.
Chemical treatments: Water that is often unbalanced can accelerate the deterioration of the filter media.
The 4 Signs That It Is Time to Change the Sand in Your Filter
Even if you have not reached the 5-year mark, your system may be sending you distress signals. Here are the main indicators that a sand change is needed:
1. The Pool Water Remains Cloudy
If you have meticulously adjusted your chemical products, your chlorine level and your pH are perfect, but the water refuses to clear up, the filter is often the culprit. Over the years, the friction of the water polishes the grains of sand. These grains, which have become smooth and rounded, lose their ability to catch and retain fine particles.
2. Abnormally High Filter Pressure
Your filter’s pressure gauge is an excellent indicator of its overall health. If the pressure continually remains above normal, even immediately after a thorough backwash, this indicates that the sand is completely saturated, compacted and clogged by greasy substances.
3. Backwashes That Are Much Too Frequent
If you find yourself having to clean your filter much more often than before to try to maintain proper flow and pressure, this is the obvious sign that your current sand can no longer properly filter the pool water.
4. Sand Deposits at the Bottom of the Pool
Finding sand at the bottom of the pool, particularly under the water returns, is a major symptom. This often means that one of the internal parts of the filter, such as the laterals or the drain, is damaged or cracked. This breakage frequently occurs when the sand has become too old and compact, or during rough handling.
Expert Tips for Changing the Sand
If you are tackling this maintenance step, here are a few tips:
Use the right filter media: Make sure you use a product specifically designed for pool filters. In addition to traditional silica sand, there are now other much more efficient filter media. POSEIDON notably offers Waterco glass pearl, a revolutionary product capable of filtering water down to 5 microns and offering a lifespan of up to 10 years. Ask us for a quote to know whether this option is suitable for your installation.
Inspect the internal parts: Take advantage of the tank being completely emptied to carefully examine the central pipe and the laterals. If they show signs of wear, replace them before adding new sand.
The water trick: Before pouring in your new bags of sand, fill the bottom of the tank with a little water. This will create a cushioning pad for the fall of the heavy sand and protect the very fragile laterals.
Entrust the Maintenance of Your Filter to Real Experts
Changing the sand in a pool filter is a physical, messy task that requires care so as not to break the internal mechanics of the tank. If your system is showing signs of fatigue or if you cannot remember the date of your last sand change, it is time to call on professionals.
The team of certified technicians at Piscines et Spas POSEIDON offers you recognized expertise for all your needs. Whether it is for a sand replacement, a parts repair or the planning of your pool maintenance services, we are here to help you fully enjoy your installations on the South Shore and in Montreal.
Schedule an appointment with us today and make sure you have a pool ready for the hot summer days!
