Seachem Prime Fresh & Saltwater Conditioner — Complete Dechlorination and Detoxification (500 ml)

Overview

Seachem Prime is a complete, concentrated conditioner designed for both freshwater and saltwater aquariums. It targets common tap water concerns by removing chlorine and chloramine from new water, helping you prepare safe water for your fish during changes or new setups. The formula is designed for straightforward dosing and reliable performance, backed by Seachem’s long-standing hobbyist heritage.

What Prime does for your aquarium

In addition to dechlorination, Prime acts as a gentle detoxifier. It helps neutralize ammonia, nitrite, and certain heavy metals present in typical tap water, offering a practical window of time (up to 48 hours) for your biofilter to begin processing toxins. This can make the transition during a new setup or routine maintenance less stressful for inhabitants and more forgiving for the overall ecosystem.

Key benefits at a glance

• Complete conditioner for both freshwater and saltwater tanks.
• Instant, lasting removal of chlorine and chloramine from tap water.
• Detoxification of ammonia, nitrite, and heavy metals at typical concentrations, with a 48-hour detox window.
• Simple dosing guidance suitable for varying tank sizes and water changes.

How to dose and 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.
• In cases of exceptionally high chloramine, a double dose may be used safely. For smaller volumes, use 2 drops per gallon.
• In an emergency, a 5x dose can address ammonia and nitrite; use a ½ dose if the water temperature is above 30°C (86°F) and chlorine or ammonia levels are low.

Practical notes for hobbyists

Prime is designed with the aquarium hobbyist in mind. It supports water changes and new-tank setups by offering a straightforward way to prepare water that is more welcoming to beneficial bacteria and fish, without masking the need for routine testing and maintenance.

Designed by scientists and hobbyists, Prime blends practical chemistry with hands-on experience. While it does not replace proper tank husbandry, it provides a dependable starting point for safer water when introducing new fish or performing changes.

Tips for best results

• Keep Prime on hand for regular maintenance and new-tank setups.
• Pair dosing with standard water testing to monitor chlorine/chloramine levels and toxin indicators.
• Follow the standard dosing guidelines for typical aquarium volumes to optimize safety and clarity of water.