Seachem Prime 500ml


Prime is the complete and concentrated conditioner for both fresh and saltwater.

Prime removes chlorine, chloramine and detoxifies ammonia. Prime converts ammonia into a safe, non-toxic form that is readily removed by the tank’s biofilter.

Prime may be used during tank cycling to alleviate ammonia/ nitrite toxicity.

Prime detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them



  • Neutralises Chlorine and Chloramines
  • Reduces Nitrates
  • 5ml treats 250Litres
  • Value for money
  • For freshwater and saltwater aquariums


  • Seachem Prime will also detoxify any heavy metals found in the tap water at typical concentration levels. Prime is non-acidic and will not impact pH. Prime will not overactivate skimmers.
  • Use at start-up and whenever adding or replacing water. When transporting or quarantining fish, use Seachem StressGuard. When adding new fish, use Stability. Both are ideal for use with Prime.
  • A single 100 mL bottle will treat 1000 US gallons of tap water. Seachem Prime will remove both chlorine and chloramines from municipal water supplies.
  • Seachem Prime also contains a binder that renders ammonia, nitrite, and non-toxic. 
  • The reduction process also breaks the bonds between chlorine and nitrogen atoms in the chloramine molecule, freeing the chlorine atoms and replacing them with hydrogen to create ammonia.
  • Prime promotes the natural production and restoration of the slime coat rather than relying on artificial or non-native slime compounds.
  • A further bonus for the reef hobbyist , Prime will


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