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Seachem Seachem Prime Water Conditioner
Seachem [11442-503274]

Seachem Prime Water Conditioner

Free Shipping at $75

Seachem Prime is the complete and concentrated conditioner for both fresh and saltwater aquariums. Use during startup and water changes to eliminate and detoxify harmful chemicals in tap water and make your aquarium safe for fish.

  • Removes chlorine, chloramine & toxic ammonia
  • Detoxifies nitrite & nitrate
  • Provides protective slime coat
  • Safe for fresh & saltwater aquariums


Prime detoxifies ammonia, nitrite and nitrate, allowing the biofilter to more efficiently remove them. Use Sechem Prime to detoxify any heavy metals found in the tap water at typical concentration levels. Prime also promotes the production and regeneration of the natural slime coat. Seachem Prime is non-acidic, will not impact pH and will not overactivate skimmers.

Use at startup and whenever adding or replacing water. Prime may also be used during tank cycling to alleviate ammonia/nitrite toxicity.

Directions: Use 1 capful (5 mL) for each 200 L (50 gallons) of new water. This removes approximately 1 mg/L ammonia, 4 mg/L chloramine, or 5 mg/L chlorine. For smaller doses, please note each cap thread is approx. 1 mL.

Tips: May be added to aquarium directly, but better if added to new water first. If adding directly to aquarium, base dose on aquarium volume. Sulfur odor is normal. For exceptionally high chloramine concentrations, a double dose may be used safely. To detoxify nitrite in an emergency, up to 5 times normal dose may be used. If temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose.

Price:$2.86 to $336.83
$56.14 per month*
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50 mL - 1.7 oz - (Treats 500 Gallons)
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Status:In Stock
Model:434
UPC:000116043403
Sku: SC04340
Id: 503275

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100 mL - 3.4 oz - (Treats 1,000 Gallons)
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Model:435
UPC:000116043502
Sku: SC04350
Id: 503276

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250 mL - 8.5 oz - (Treats 2,500 Gallons)
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Model:436
UPC:000116043601
Sku: SC04360
Id: 503277

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500 mL - 16.9 oz - (Treats 5,000 Gallons)
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Model:433
UPC:000116043304
Sku: SC04330
Id: 503278

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2 Liter - 68 oz - (Treats 20,000 Gallons)
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Model:438
UPC:000116043809
Sku: SC04380
Id: 526152

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4 Liters - 1 Gallon - (Treats 40,000 Gallons)
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Status:In Stock
Model:439
UPC:000116043908
Sku: SC04390
Id: 526153

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$673.99
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20 Liters - 5 Gallons - (Treats 200,000 Gallons)
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Status:In Stock
Model:431
UPC:000116043106
Sku: SC04310
Id: 526151

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