Description
Seachem Acid Regulator 250g — pH Lowering Buffer & Tap Water Dechlorinator
Seachem Acid Regulator 250g (SKU: 725037-76) offers complete pH adjustment and tap water conditioning for medium-sized freshwater aquariums. It lowers pH into the acidic spectrum (4.5–6.8) while reducing general hardness by precipitating calcium and magnesium out of solution.
This 250g bottle neutralises chlorine, chloramines, and ammonia, preparing tap water for soft-water aquatic species. Combined with Seachem Neutral Regulator, it enables precise control over target pH parameters.
Usage & Application
When to Use
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Routine Water Maintenance: Added during water changes to reduce tap water pH and hardness.
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Acidophile Care: Keeps water parameters suited for soft-water community fish.
Dosing & Application Guide
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Add 5 g (1 level teaspoon) per 40–80 L (10–20 US gallons) daily until reaching target pH.
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Pre-mix into replacement water containers prior to dosing into the aquarium.
Product Specifications & Highlights
Key Features
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Precise Acidic Control: Lowers and buffers pH within the 4.5 to 6.8 range.
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Water Softening Capacity: Binds divalent cations to reduce total hardness.
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Tap Water Conditioning: Eliminates chlorine, breaks chloramine bonds, and detoxifies ammonia.
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Phosphate Buffer Base: Protects against sudden pH drops in active bio-systems.
Product Details
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Brand: Seachem
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SKU: 725037-76 (Internal ID: 130753)
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Barcode (GTIN/UPC): 000116007603
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Product Type: Aquarium Additives & Supplements / pH Lowering Buffer
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Package Dimensions: 65 mm (L) × 65 mm (W) × 130 mm (H)
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Gross Package Weight: 290 g
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Net Weight: 250 g
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Target Environment: Freshwater Acidic & Soft-Water Aquariums
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Treatment Capacity: 250 g treats up to 2,000 Liters (500 US gallons)


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