Prime Seachem formula is the complete and concentrated conditioner for both fresh and saltwater. It works fast to remove chlorine, chloramine and detoxifies ammonia. 

What are the benefits of Prime?

  • Converts ammonia into a safe, non-toxic form
  • Can be used during tank cycling to alleviate ammonia/nitrite toxicity
  • Non acidic


Use 1 capful (5 mL) for each 200 L of new water. For smaller volumes, please note each cap thread is approximately 1 mL. 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 safe. If temperature is > 30 °C and chlorine or ammonia levels are low, use a half dose.