How choose a right pump ?

It is recommended to replace the silica sand in your swimming pool sand filter every 1 to 2 years, depending on usage frequency, water quality, and bather load. Regular replacement ensures optimal filtration performance and crystal-clear pool water.

Main reasons for replacement:

• Media degradation from backwashing: During backwashing, the sand bed expands 1.2 to 1.3 times its volume. Constant water flow causes sand particles to collide and rub against each other, gradually breaking down finer particles and leading to sand loss.
• Chemical wear and contamination: Lower-purity silica sand can fuse or clump when exposed to fluctuating pH levels, chlorine, and other pool chemicals over time. This reduces filtration efficiency and allows more dirt and debris to pass through.

Replacing the sand periodically prevents channeling, maintains strong water clarity, and extends the overall lifespan of your sand filter.

Poolking's sand filter warranty is 3 years for fiberglass filter,2 years for plastic filter. During the warranty period,if the filters parts have any damage,we can judge the

factors according to the photos or videos, then we can offer free parts to replace. If the filters are damaged badly,we will provide a new one.

The pumps and lights are 1 year warranty,the method is same as filters.

Poolking stands behind its products with a clear and customer-friendly warranty policy to ensure peace of mind.

• Fiberglass sand filters: 3-year warranty
• Plastic filters: 2-year warranty
• Pumps and pool lights: 1-year warranty

If any product fails to work normally during the warranty period, simply send us clear photos and videos showing the issue. Our professional team will quickly assess the cause. For minor part damage, we provide free replacement parts shipped promptly. In cases of severe damage, we will replace the entire unit at no cost to you.

This efficient claims process minimizes downtime and ensures your swimming pool returns to optimal performance quickly. All replacements use genuine Poolking parts, maintaining the original high quality and performance standards.

Proper maintenance, such as regular backwashing and avoiding chemical overload, will further extend product life. Poolking’s strong after-sales support is one of the key reasons customers choose us over cheaper alternatives.

Poolking maintains strict quality control standards to deliver reliable swimming pool equipment that customers can trust. A dedicated professional Quality Control team performs 100% inspection on every product before packing.

Multi-stage testing process includes:

• First water pressure test: Conducted immediately after the filter inner tank is produced, before bobbin winding, to verify structural integrity.
• Second water pressure test: Performed after installing all connections, manhole, sightglass, and other components to ensure no leaks under operating pressure.
• Final detailed inspection: During packing, the QC team thoroughly checks fiberglass winding, tank neck, internal resin layers, and all surfaces for any flaws or defects.

This rigorous multi-step process eliminates defects, guarantees leak-proof performance, and ensures long-term durability in harsh pool environments. By combining advanced manufacturing with zero-tolerance quality assurance, Poolking’s fiberglass sand filters and pressure tanks consistently exceed industry standards, reducing customer maintenance costs and downtime.