Birm + KDF 85 Media (5 lbs) is a premium blend designed for iron, manganese, and hydrogen sulfide reduction in residential and commercial water treatment systems. This combination delivers superior contaminant removal, extended media life, and cost-effective performance.
A 5 lb pack is the perfect size to fill a 20″ Big Blue filter housing, making it ideal for homeowners who need a quick media replacement without purchasing bulk quantities.
⚠️ Note: This item cannot be shipped to California.
Why Choose This Media Blend?
✅ Birm Media Advantages
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Long media life with low attrition loss
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No chemicals required for regeneration – only periodic backwashing
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Wide temperature range and extremely high removal efficiency
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Economical and reliable for both iron and manganese reduction
✅ KDF 85 Media Advantages
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Reduces iron, hydrogen sulfide, manganese, and heavy metals (lead, mercury, nickel, chromium, etc.)
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Controls bacteria, fungi, algae, and scale buildup
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Ideal for use in GAC beds, ion exchange resins, carbon block filters, and inline carbon filters
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Removes up to 99% of dissolved metals from water supply
Applications
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Whole house water filters
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Well water treatment systems
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Point-of-entry filtration setups
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Pre-treatment for reverse osmosis and advanced filters
Physical Properties
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Color: Black
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Bulk Density: 40–45 lbs./cu. ft.
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Mesh Size: 10 × 40
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Specific Gravity: 2.0 gm/cc
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Effective Size: 0.48 mm
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Uniformity Coefficient: 2.7
Conditions for Operation
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Water pH Range: 6.8–9.0
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Maximum Water Temperature: 100°F (38°C)
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Dissolved Oxygen Content: At least 15% of iron/manganese content
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Backwash Rate: 10–12 gpm/sq. ft. (20–40% bed expansion)
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Service Flow Rate: 3.5–5 gpm/sq. ft.
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Limitations: Free chlorine <0.5 ppm, no oil, no polyphosphates
Why Buy 5 lbs?
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Perfect quantity to fill a 20” Big Blue Filter housing
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Easy to handle, ship, and store
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Great for DIY homeowners or service technicians who need a quick refill without investing in bulk bags
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Cost-effective solution for targeted filter upgrades or replacements