Description
Seachem De*nitrate 250mL — Eliminates nitrates from water with its porous mineral biological filtration media in low-flow filtration aquariums
Seachem De*nitrate 250mL (SKU: 724954-136) provides 250mL of solution engineered to eliminate nitrates from aquarium water. Formulated for low-flow filtration configurations, it cultivates anaerobic bacteria deep within its internal pore matrix.
Seachem de*nitrate 250mL pack is a medium-sized water supplement additive with porous filtration media that efficiently removes nitrates, nitrites, and ammonia by supporting beneficial bacterial growth within its structure. It works best in low-flow environments and treats up to 100 litres per 250 mL, helping maintain healthy water quality in both freshwater and saltwater aquariums.
Usage & Application
When to Use
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Medium System Nitrate Reduction: Suitable for medium-sized freshwater or marine aquariums experiencing persistent nitrate buildup.
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Canister & Sump Integration: Can be housed in slow-flow media reactors, canister media trays, or box filters.
Placement & Flow Guide
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Place in a fine mesh media bag inside your filter system.
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Ensure water flow velocity through the media bed remains under 50 US GPH (200 L/h) to maintain anaerobic conditions.
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Pre-filter water through a mechanical sponge or filter floss to prevent detritus clogging.
Product Specifications & Highlights
Key Features
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Porous Matrix Structure: High surface area fosters dense colonies of aerobic and anaerobic microorganisms.
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Natural Nitrate Conversion: Converts nitrate into nitrogen gas via natural biological pathways.
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Permanent Bio-Support: Physical stone substrate does not exhaust or leach back bound compounds.
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Safe for All Aquatic Life: Neutral mineral composition won’t shift pH or hardness parameters.
Product Details
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Brand: Seachem
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SKU: 724954-136 (Internal ID: 130700)
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Barcode (GTIN/UPC): 000116013604
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Product Type: Aquarium Filter Media / Biological Nitrate Reduction
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Package Dimensions: 70 mm (L) × 70 mm (W) × 120 mm (H)
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Gross Package Weight: 200 g
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Net Volume: 250 mL
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Target Environment: Freshwater & Marine Aquariums
- Filtration capacity: 100 litres per 250 mL at low water flow rates below 200 LPH / 50 GPH





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