Seachem Prime Fresh & Saltwater Conditioner – Chlorine & Chloramine Detoxifier (1 gal)

Powerful water conditioning for fresh and saltwater tanks

Seachem Prime is a complete, concentrated conditioner designed for both freshwater and saltwater aquariums. It targets chlorine and chloramine in tap water, helping you prepare new water for your tank without adding stress to your fish. The formula supports everyday hobbyists who want reliable, science-backed conditioning from a brand with decades of experience.

Beyond dechlorination, Prime acts as a gentle detoxifier. It helps the biofilter work smoothly by allowing ammonia, nitrite, and nitrate to be managed more predictably while they are detoxified for up to 48 hours. It also reduces the impact of heavy metals commonly present in typical tap water, creating a more forgiving starting point for fresh installations, water changes, and routine maintenance.

Two practical benefits for everyday fishkeeping

• Remover: Immediate removal of chlorine and chloramine so new water is fish-friendly from the start.
• Detoxifier: Temporary detoxification of ammonia, nitrite, and heavy metals to ease transitions and water changes.

Prime is suitable for a wide range of setups, from betta bowls to community tanks and even some reef contexts. While it offers helpful conditioning, results vary with tank conditions and stocking levels. It’s best viewed as a support tool that complements solid aquarium care, not a guaranteed outcome.

Usage guidelines that fit real-world setups

• Use 1 capful (5 mL) for each 200 L (50 US gallons) of new or replaced water.
• For exceptionally high chloramine concentrations, a double dose may be used safely.
• For smaller volumes, use 2 drops per gallon.

• In emergency scenarios, a 5x dose may be used for ammonia and nitrite concerns.
• If water temperature is above 30°C (86°F) and chlorine or ammonia are low, use a half dose.

Why Seachem’s approach matters to hobbyists

Seachem’s philosophy centers on educated customers and science-backed performance. Prime reflects that ethos by offering a straightforward way to condition tap water for fish without compromising essential biological processes. The result is a calmer transition for new fish and a more predictable maintenance routine, grounded in real-world experience rather than marketing guarantees.