Must-have Seachem Fish & Aquatic · Water Care

Seachem

Seachem Prime Fresh and Saltwater Conditioner, 500 ml

Must-have

Best for: Making tap water safe at every water change

A concentrated conditioner that removes chlorine and chloramine from tap water and temporarily binds ammonia and nitrite. A little goes a long way, so one bottle lasts a long time.

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Other sizes on Amazon: 250 ml1 litre

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What we like

  • Very concentrated; small doses
  • Handles chlorine and chloramine
  • Fresh and saltwater

Keep in mind

  • Strong sulphur smell (harmless)
  • Doesn't replace regular water changes

Our in-depth look

Who it's for

Every freshwater and saltwater aquarium — tap water must be treated before it goes in.

Who should skip it

None.

Tips

Dose for the volume of new water you're adding, not the whole tank. Shake the bottle and measure with the cap.

Key features

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Questions owners ask

Why does it smell like sulphur?

That smell is normal for this formula and harmless.

Does it remove chloramine?

Yes, it handles both chlorine and chloramine.

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