Prime - 8.5 oz.

SKU: 198587
Manufacturer: Seachem
MPN: 436

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Prime is a complete and concentrated conditioner for both freshwater and saltwater aquariums. No other product is required to make new water safe. It is nonacidic and will not impact pH. Use at start up and whenever new water is added or replaced. Removes chlorine, chloramine, ammonia, detoxifies nitrate and nitrite. Provides slime coat and essential ion. Treats 2,500 gallons of water.


Package Size8.8 oz.
Treats up to2500 gal.
Internal Id


Contains: proprietary aqueous solution of complexed hydrosulfite salts.


Directions: Use 1 capful (5 mL) for each 200 L (50 gallons*) of new water. This removes approximately 1 mg/L ammonia, 4 mg/L chloramine, or 5 mg/L chlorine. For smaller doses, please note each cap thread is approx. 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 temperature is > 30 °C (86 °F) and chlorine or ammonia levels are low, use a half dose.

Ratings & Reviews

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If u are tried of false promises. There is one thing that I can promise u. This product is as true to its name. As Jesus is the Christ & Lord.



If there's one thing I always keep with me, it's my bottle of Prime! I definitely rank SeaChem's Prime to be one of the best Conditioners for water!

The Best water conditioner


It conditions the water and doesn't take much at all so it's economical and Awesome! Not only does it make tap water safe, it helps with all the other nasty issues water might bring up for you, and even one of our nicer local fish stores use it for their tanks!

Smells but excells


The only water conditioner serious enthusiasts use. A little goes a long way, and its great for sudden ammonia and/or nitrite spikes. Doesn't hurt my plants, ph, or foul my filters with aloe vera like other products can. All you need..just add water.