Active Glass Filter Media 15kg Fine | Advanced Pool Filter Media Upgrade
Active Fine Glass Filter Media is the top-layer component of a high-performance active glass filtration setup. Carrying a permanent negative electrical charge (Zeta Potential) applied during manufacturing, it attracts and captures organic molecules, bacteria, and fine particles that sand or conventional glass media cannot trap. The result is noticeably clearer pool water, reduced backwash demand, and a lower overall maintenance burden.
For a full two-grade setup, pair this fine grade with our Active Glass Filter Media 15kg Coarse Grade.
Product Specifications
| Media Type | Active negatively charged recycled glass (Zeta Potential) |
| Grade | Fine (1mm to 3mm) |
| Filter Bed Position | Top 65% of filter bed |
| Bag Weight | 15kg |
| Filtration Rating | Down to 5 microns at 20m3/m2 filter area flow rate |
| Comparison | Sand and conventional glass filter to 20-30 microns |
| Backwash Saving | Up to 50% less water flow required vs sand or conventional glass |
| Material | 100% recycled plate glass |
| pH Dependency | None - effective across all standard pool water pH ranges |
| Compatible With | Standard sand filter tanks, variable speed pump systems |
Key Features
- Permanently Negatively Charged. Zeta Potential charge lasts for the life of the media, continuously attracting fine particles and organic molecules.
- Filters Down to 5 Microns. Far finer than sand or conventional glass media (20-30 microns) for visibly clearer water.
- Reduces Backwash Demand. May require up to 50% less water flow to backwash effectively, saving water and energy.
- Reduces Bacteria and Virus Load. Leaves more free chlorine available to sanitise pool water, lowering chemical consumption.
- pH Independent Performance. Works effectively across varying pool water conditions year-round.
- Variable Speed Pump Compatible. Performs effectively at lower flow rates for energy-efficient pool systems.
- 100% Recycled Plate Glass. A sustainable, environmentally responsible filtration choice.
- 30% Faster Clarity. Independent testing shows active glass media cleared cloudy water 30% faster than sand or conventional glass media.
How the Two-Grade Setup Works
Active glass filter media is used in two grades that work together for optimal performance. The fine grade (1-3mm) fills the top 65% of the filter bed, sitting above the coarse grade base layer (3-7mm). This two-grade configuration maximises filtration surface area and debris capture across the full depth of the filter.
- Fine grade (1-3mm): Top 65% of the filter bed (this product)
- Coarse grade (3-7mm): Bottom layer of the filter bed
Need help selecting the right quantity? Contact us with your filter type and we will advise on media volume and bulk pricing for combination orders.
Recommended Accessories
- Active Glass Filter Media 15kg Coarse Grade - pair with fine grade for a complete two-grade active glass filter bed.
- P400 Swimming Pool Filter - up to 36,000L, supplied with active glass media included.
- P550 Swimming Pool Filter - up to 57,000L, supplied with active glass media included.
- 5-in-1 Test Strips - test water chemistry after filter media upgrade.
Frequently Asked Questions
Q: What is the difference between glass media and sand?
A: Sand filters pool water down to 20-30 microns. Active glass filter media filters down to 5 microns, capturing far finer particles for cleaner, clearer water. Glass media also lasts longer, requires less frequent backwashing, and inhibits bacteria growth within the filter bed.
Q: What makes active glass media different from standard glass media?
A: Active glass media carries a permanent negative electrical charge (Zeta Potential) applied during manufacturing. This charge attracts organic molecules, bacteria, and fine particles that standard glass media cannot capture. The charge lasts for the life of the media and works regardless of pool water pH.
Q: Is it a direct replacement for sand in my existing filter?
A: Yes, active glass filter media is a direct drop-in replacement for silica sand in standard sand filter tanks. No modifications to your filter are required.
Q: Does it help reduce backwashing?
A: Yes. Active glass media may require up to 50% less water flow to backwash effectively compared with sand or conventional glass media, resulting in meaningful water and energy savings over time.
Q: Is it suitable for variable speed pumps?
A: Yes. Active glass media performs effectively at lower flow rates, making it well suited to variable speed pump systems running at reduced speeds for energy efficiency.
Q: Is it made from recycled glass?
A: Yes. Active glass filter media is made from 100% recycled plate glass, making it a sustainable and environmentally responsible alternative to virgin silica sand.
Q: Will it reduce my chemical usage?
A: It can help. By reducing bacteria and organic load within the filter bed, more free chlorine remains available to sanitise the pool water, which can result in lower overall chemical consumption and reduced combined chlorine levels.
Q: How much do I need for my filter?
A: Check your filter manufacturer's guidelines for media loading depth and total media volume required. Contact us with your filter model if you need help calculating the right quantity.
Pickup and Delivery
Perfect Pools Service Warehouse - 15C Douglas Alexander Parade, Albany, Auckland
Hours: Mon-Fri 9am-4pm | Sat 10am-2pm
NZ-wide delivery available. Charges calculated at checkout.
Questions? Email perfectpoolsnz@gmail.com or visit our contact page.
