Most sand filters are designed for #20 (20-grade) silica pool filter sand. This media is washed, dried, and sized for consistent flow and trapping debris. It’s different from decorative or play sands you might see for other uses.

• Check compatibility: Review your filter’s manual for approved media and capacity.
• Know your options: Some filters also accept alternatives like glass media, zeolite, or fiber filter balls. Follow each media’s instructions for fill level and maintenance.
• Buy the right size: Pool filter sand commonly comes in 50 lb bags.

Choosing the correct media can help maintain clear water and steady pressure, but results can vary based on your specific filter and water conditions.

The number of bags depends on your filter tank’s sand capacity, not your pool’s size. Look on the filter’s label or in the owner’s manual; it usually lists the required pounds of sand.

1. Find the capacity: Note the sand weight or fill level specified by the manufacturer.
2. Plan your bags: Pool filter sand is often sold in 50 lb bags. Smaller filters may use one bag, while larger tanks can require multiple.
3. Don’t overfill: Fill to the indicated level rather than estimating by sight.
4. Using alternatives? Follow the media’s conversion guidance and your filter’s instructions.

This approach can help you buy the right amount, though exact needs vary by filter model and media type.

Pool filter sand is engineered for filtration, while play sand is designed for general use and feel. Key differences include:

• Grain size: Pool filter sand is typically a uniform 20-grade silica, helping trap particles without blocking flow.
• Cleanliness: It’s washed and dried to reduce dust and impurities.
• Performance: Mixed or finer grains in play sand can clog laterals, cause channeling, or lead to cloudy water.

For best results, use media listed as pool filter sand or an approved alternative per your filter’s manual. Sticking with the recommended media can help maintain filtration performance, but outcomes can vary based on equipment and maintenance.

Fiber filter balls are a lightweight alternative that some sand filters can use. They’re easy to handle and can often be rinsed and reused, which may reduce how often you replace media.

• Compatibility: Always confirm your filter accepts alternative media and follow its capacity guidelines.
• Conversion: Alternatives may require different amounts by weight or volume—use the media’s instructions rather than sand measurements.
• Maintenance: Cleaning methods can differ (e.g., backwashing vs. removing and rinsing). Follow the care steps provided.

Performance can vary with water chemistry and equipment. If you try filter balls, monitor pressure and water clarity and adjust maintenance routines as recommended by your filter and media instructions.

Swapping sand is a straightforward job when you follow your filter’s instructions and basic safety steps.

1. Power off and relieve pressure: Turn off the pump and open the air relief (if available).
2. Open the tank: Remove the valve or top as directed.
3. Protect internals: Keep laterals/standpipe centered and intact; avoid damage.
4. Remove old media: Scoop or vacuum it out and inspect the laterals for cracks.
5. Pre-fill with water: Half-fill the tank to cushion new media.
6. Add new media slowly: Use the correct pool filter sand or approved alternative and fill to the specified level.
7. Reassemble and flush: Backwash and rinse until clear, then return to filter mode.

Pour gently to minimize dust and always follow your filter’s manual; results can differ by model.