Seachem Prime 1L Fresh & Saltwater Conditioner — Chlorine Remover & Detoxifier

Meet Seachem Prime: versatile water conditioning for freshwater and saltwater tanks

Seachem Prime offers a comprehensive conditioning solution designed for both new setups and ongoing tank maintenance. This concentrated conditioner combines immediate chemical removal with a detoxifying action, helping you prepare tap water for your aquatic inhabitants without unnecessary stress to the system. The result is a clearer, more stable environment as you care for a diverse mix of fish and invertebrates.

What Prime does for your tank

• Immediately and permanently removes chlorine and chloramine from tap water, helping protect gill membranes during water changes.
• Detoxifies ammonia, nitrite, and heavy metals for up to 48 hours, providing a temporary buffer while biofiltration catches up.
• Designed for both fresh and saltwater systems, making it a versatile addition to mixed or transitioning tanks.
• Supports a smoother transition for new or rehomed fish by reducing common water-related stressors as you introduce them to their new home.
• With a compact dose guide, Prime integrates easily into routine water changes and new water preparation.

How to use Seachem Prime

• Use 1 capful (5 mL) per 200 L (50 US gallons) of new or replacement water. For best results, add Prime to the new water first.
• If chloramine levels are exceptionally high, a double dose may be used safely. For smaller volumes, use 2 drops per gallon.
• In an emergency, a 5x dose may be used for both ammonia and nitrite. If the water temperature is above 30°C (86°F) and chlorine or ammonia levels are low, use a ½ dose.

Real‑world use cases

• During routine water changes, Prime helps prepare tap water for quick, safe addition to your tank.
• Setting up a new aquarium becomes more predictable with a conditioner that addresses common tap water contaminants.
• When topping off, Prime provides a practical buffer against sudden shifts in water chemistry.