AFM® Grade 2 is a medium‑coarse activated glass filter medium designed to replace or supplement sand beds. With particles sized between 1.0 and 2.0 mm, this Grade 2 media is ideal for support layers or for filters that need both flow and filtration. The activation process gives the glass media bio‑resistance, high surface area, and enhanced filter performance. A 25 kg bag provides enough material for standard filters or partial media upgrades.

• Key Features

• Particle size range: 1.0‑2.0 mm (Grade 2)
• 25 kg bag — sufficient for many standard filter beds or as support media
• Made from recycled glass; activated for bio‑resistance and stable filtration
• Tight control of effective size, sphericity, and uniformity coefficient for reliable flow and backwash
• Supports layered media beds with finer AFM grades above and coarser Grade 3 or gravel below
• Long lifespan under regular maintenance; retains performance over many years

✓ Benefits

✓ Provides good hydraulic flow without sacrificing filtration quality
✓ Enhances overall filtration when used with finer AFM grades or sand top layers
✓ Better backwash efficiency and reduced water waste
✓ Enhanced removal of suspended solids and fine debris
✓ Durable and economic media with bio‑resistance and stable performance

Technical Specifications

• Particle Size Range: 1.0‑2.0 mm

• Effective Size (d10): approx. 0.80‑1.00 mm

• Uniformity Coefficient (d60/d10): approx. 1.3‑1.8

• Bulk Bed Density (uncompacted): ~1.36 kg/L ± small variance

• Hardness: > 5.5‑7.0 Mohs

• Bag Weight: 25 kg

What You Get

1 × 25 kg bag of AFM® Grade 2 Activated Filter Media (1‑2 mm)