Seachem Prime 4 Litre | Concentrated Aquarium Water Conditioner & Dechlorinator

A highly concentrated, professional-grade water conditioner designed to make tap water safe for freshwater and marine aquariums.

Seachem Prime removes chlorine and chloramine while detoxifying ammonia, nitrite and nitrate, helping protect fish during water changes, cycling and emergencies.

It is non-acidic, will not affect pH, and is suitable for both home aquariums and high-volume use.

Key Benefits

• Removes chlorine and chloramine from tap water
• Detoxifies ammonia, nitrite and nitrate
• Safe for freshwater and marine aquariums
• Highly concentrated formula for long-term use
• Helps protect fish during cycling and water changes
• Does not affect pH levels

Who It’s For

• Freshwater and saltwater aquarium keepers
• Large or frequently maintained tanks
• Fish keepers during cycling or emergencies

How to Use

• Use 1 capful (5 mL) for every 200 L (50 US gallons) of new water
• For smaller volumes, each cap thread is approximately 1 mL
• Best added to new water before adding to the aquarium
• If dosing directly into tank, calculate based on total tank volume
• For high chloramine levels, a double dose may be used safely
• To detoxify nitrite in emergencies, up to 5x normal dose may be used
• If temperature exceeds 30°C (86°F) and chlorine/ammonia levels are low, use half dose

Why You’ll Love It

A powerful and reliable all-in-one water conditioner that keeps aquarium water safe, stable and fish-friendly, even during stressful conditions like cycling or water changes.