🔷 Filter Sand 25kg 16-30 Grade | Premium Silica Pool Filtration Media

The industry-standard filtration media for crystal-clear pool and spa water 🏊‍♂️

📋 Product Overview

Filter Sand 16-30 Grade is the industry-standard filtration media specifically engineered for swimming pool and spa sand filters. This premium-quality silica sand features a precisely controlled grain size of 0.5mm to 1.0mm, making it the recommended media for virtually all domestic and commercial pool filtration systems.

Manufactured from natural quartz to meet BSEN 12904 standards, this high-purity silica sand provides reliable, consistent filtration performance year after year. The sub-angular to rounded grain shape creates optimal void spaces between particles, effectively trapping dirt, debris, algae, and organic matter as pool water passes through your filter.

With a silica content exceeding 98%, this professional-grade sand delivers the chemical stability and durability that pool owners demand. Whether you’re replacing old media or setting up a new filtration system, this 25kg bag provides the trusted foundation for maintaining pristine water quality in pools, spas, hot tubs, and water features.

⭐ Key Features

✅ Industry-Standard 16/30 Grade – The recommended grain size (0.5mm-1.0mm) for swimming pool filters, ensuring optimal filtration performance and water flow characteristics

✅ High-Purity Silica Composition – Contains over 98% silica (SiO₂), providing excellent chemical stability and resistance to breakdown from pool chemicals

✅ Manufactured to BSEN 12904 Standards – Meets European standards for filter media, guaranteeing consistent quality and performance specifications

✅ Low Uniformity Coefficient (<1.4) – Closely graded particle sizes prevent channelling and ensure water flows evenly through the entire filter bed

✅ Long-Lasting Durability – Maintains effective filtration performance for 3-5 years under normal operating conditions, reducing replacement frequency

✅ Universal Compatibility – Suitable for use with Intex, Astral, Hayward, Pentair, and virtually all other swimming pool sand filter brands

✅ Triple-Washed and Kiln-Dried – Pre-processed to remove dust, organic contaminants, and excess moisture for a clean, ready-to-use product

✅ Efficient Backwashing – Sub-angular to rounded grain shape allows for effective cleaning during backwash cycles, prolonging media lifespan

🔧 Technical Specifications

Specification	Value
Grade Designation	16/30
Grain Size Range	0.5mm – 1.0mm
Nominal Effective Size	0.54 – 0.71mm
Uniformity Coefficient	<1.4
Specific Gravity	2.65
Uncompacted Bulk Density	1.56 t/m³
Silica Content (SiO₂)	98.29%
Material Composition	Natural Quartz
Grain Shape	Sub-angular to rounded
Colour	Brown
Bag Size	25kg
Manufacturing Standard	BSEN 12904
Filtration Capability	Particles down to 20-40 microns

📊 Grade Selection Guide

🎯 Understanding Filter Sand Grades

Filter sand grades indicate the sieve mesh sizes used during manufacturing. The 16/30 designation means the sand passes through a size 16 mesh but is retained by a size 30 mesh, resulting in a controlled particle size range.

Grade	Grain Size	Recommended Application
16/30	0.5mm – 1.0mm	Standard swimming pool filters, spas, hot tubs – the most commonly used grade for domestic and commercial pool filtration
0.4mm/0.8mm	0.4mm – 0.8mm	Fine filtration applications, smaller domestic pool filters

Note: The 16/30 grade is the industry-recommended standard for the vast majority of swimming pool sand filters. Always consult your filter manufacturer’s specifications to confirm the appropriate grade for your specific equipment.

📐 Quantity Guide

🧮 How Much Sand Does Your Filter Need?

The amount of sand required depends on your filter’s diameter and design. Always refer to your filter manufacturer’s specifications for exact quantities.

Filter Diameter	Approximate Sand Required	25kg Bags Needed
16″ (400mm)	45kg	2 bags
19″ (480mm)	85kg	4 bags
21″ (530mm)	100kg	4 bags
24″ (610mm)	155kg	7 bags
27″ (685mm)	200kg	8 bags
30″ (760mm)	275kg	11 bags

⚠️ Important Notes:

• Fill your filter according to the manufacturer’s specified weight, not by the number of bags
• Sand should typically fill approximately two-thirds of the filter tank
• Leave adequate space above the sand bed for proper backwashing expansion
• Example: A Tagelus 19-inch filter requires approximately 85kg, meaning you’ll need 4 x 25kg bags (100kg total), with the remaining 15kg available for future maintenance

Volume vs Weight Consideration: Sand filters are specified by weight (kg), not volume (litres). The bulk density of 1.56 t/m³ means that 25kg of sand occupies approximately 16 litres of space.

💎 Performance Benefits

Reliable Particle Removal Sand filters effectively capture particles in the 20-40 micron range, removing dirt, debris, algae, and organic matter from pool water. This level of filtration maintains clear, visually appealing water throughout the swimming season.

Consistent Water Flow The low uniformity coefficient (<1.4) ensures particles are closely graded, preventing the formation of channels where water could bypass the filtering action. This delivers consistent filtration across the entire sand bed.

Chemical Compatibility With silica content exceeding 98%, this filter sand demonstrates excellent resistance to the chlorine, bromine, and other sanitising chemicals commonly used in pool water treatment. The sand maintains its structure without degrading or releasing contaminants.

Economical Operation Sand filtration remains one of the most cost-effective methods for pool water treatment. The 3-5 year lifespan between media changes, combined with simple backwash maintenance, keeps ongoing costs to a minimum.

Improved Water Clarity Regular filtration through properly maintained sand media removes suspended particles that cause cloudiness, contributing to the sparkling, inviting appearance that pool owners expect.

🎯 Real World Applications

🏊‍♂️ Residential Swimming Pools The most common application for 16/30 grade filter sand. Suitable for above-ground and in-ground pools of all sizes, providing reliable daily filtration to keep family pools clean and safe.

🏢 Commercial Swimming Facilities Hotels, leisure centres, and public pools rely on sand filtration for its durability and ease of maintenance. The consistent performance handles high bather loads effectively.

🛁 Hot Tubs and Spas Hot tub sand filters benefit from the fine filtration capability, capturing body oils, skin cells, and cosmetic residues common in heated water environments.

🌿 Garden Ponds and Water Features Natural and ornamental ponds use sand filtration to remove algae, fish waste, and organic debris, maintaining clear water for viewing aquatic life.

🏭 Water Treatment Applications Beyond recreational use, 16/30 grade silica sand serves in potable water filtration and industrial water treatment processes where reliable particle removal is essential.

🔄 Installation Notes

🛠️ Sand Replacement Procedure

Preparation:

1. Turn off the pump and disconnect power to the filtration system
2. Close all valves to isolate the filter
3. Drain the filter tank using the drain plug at the base
4. If replacing old sand, use a venturi pump connected to your garden hose for easy sand removal

Installation:

1. Protect the central standpipe by covering the opening (a plastic bag secured with tape works well)
2. Add approximately 5cm of water to the empty tank to cushion the laterals
3. Pour sand slowly into the filter, distributing evenly around the standpipe
4. Fill to the manufacturer’s specified weight – typically two-thirds of the tank capacity
5. Remove the standpipe protection and reassemble the multiport valve

Initial Backwash: After installing new sand, perform a thorough backwash for 2-3 minutes to flush out fine dust particles. Follow with a rinse cycle before returning to normal filtration mode.

Ongoing Maintenance:

• Backwash when the pressure gauge reads 8-10 PSI above the clean operating pressure
• Avoid excessive backwashing as this removes sand over time
• Replace filter sand every 3-5 years, or sooner if you notice reduced water clarity or persistent channelling

⚠️ Professional Installation Recommended: If you’re unfamiliar with sand filter maintenance, consider having a pool professional handle the media replacement to ensure correct installation and optimal performance.

📥 Downloads & Resources

📄 Safety Data Sheet PDF Download

Safety Handling Notes:

• Avoid inhaling dust during installation – wear a dust mask in poorly ventilated areas
• Use safety glasses to protect eyes from sand particles
• Wash hands thoroughly after handling
• Store in a dry, cool place to prevent moisture absorption or contamination

🏆 Why Choose Filter Sand 16-30 Grade?

✅ Proven Performance – The 16/30 grade has been the industry standard for pool filtration for decades, trusted by professionals and homeowners alike

✅ Exceptional Purity – Over 98% silica content ensures chemical stability and long service life without contaminating your pool water

✅ Certified Quality – Manufactured to BSEN 12904 standards with rigorous quality control testing during production

✅ Cost-Effective Maintenance – Sand filtration offers the lowest ongoing maintenance costs of any pool filter type, with simple backwash cleaning and 3-5 year media life

✅ Universal Fit – Compatible with virtually every sand filter brand on the market, making it a worry-free replacement choice

✅ UK-Sourced Product – Manufactured in the United Kingdom, reducing transport distances and supporting local industry

🛒 Why Buy From Parts4Tubs?

At Parts4Tubs, we understand that quality filtration is the foundation of clean, healthy pool and spa water. That’s why we source our filter sand from trusted UK suppliers who meet the highest manufacturing standards.

✅ Fast UK Delivery – We dispatch orders promptly so you can get your pool back in action quickly

✅ Competitive Pricing – Quality filtration media at prices that make sense for pool owners

✅ Expert Support – Our knowledgeable team can help you determine the right quantity for your specific filter

✅ Bulk Order Options – Need multiple bags? We offer convenient pallet delivery for larger orders

✅ Trusted Retailer – Join thousands of satisfied customers who rely on Parts4Tubs for their pool and spa supplies

Delivery Note: Orders for multiple bags of sand may be delivered via pallet service. Please ensure your delivery address has access for larger vehicles, and note that this is a kerbside delivery service.

✨ Summary

Filter Sand 25kg 16-30 Grade delivers the reliable, proven filtration performance that pool and spa owners have trusted for decades. With over 98% silica purity, precise grain sizing to BSEN 12904 standards, and universal compatibility with all major filter brands, this premium media provides crystal-clear water at an economical price point. Simply fill your filter to the manufacturer’s specifications, maintain with regular backwashing, and enjoy 3-5 years of effective filtration before your next media change.

Order your Filter Sand today and experience the difference that quality filtration media makes!