Seachem Laboratories Prime Ammonia Detoxifier 4 L/1 gal

Keeping your fish in clean, conditioned water is one of the kindest things you can do for them, and this 4-liter, 1-gallon bottle of Seachem Laboratories Prime is built for owners who tend a larger tank or top off water often. Prime is a complete and concentrated conditioner for both fresh and salt water, so the same bottle works whether your aquarium is a freshwater community or a marine setup. The generous 1-gallon size means fewer refills and plenty on hand for routine water changes.

• Removes chlorine, chloramine, and ammonia, helping make tap water safer the moment you add it to the tank.
• Converts ammonia into a safe, non-toxic form that is readily removed by the tank's biofilter.
• May be used during tank cycling to alleviate ammonia and nitrite toxicity, a stressful stretch for new setups.
• Detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them.
• Works as a complete, concentrated conditioner for both fresh and salt water, so one bottle covers different tanks.
• Promotes the production and regeneration of the natural slime coat, the fish's own first line of protection.
• Non-acidic, so it will not impact pH while you condition the water.
• Will not overactivate skimmers, a welcome detail for marine and reef keepers.
• The large 4-liter, 1-gallon format suits frequent water changes and bigger systems with less frequent restocking.
• Designed for use at start-up and whenever you add or replace water, keeping conditioning part of your routine.

Seachem recommends using Prime at start-up and whenever you are adding or replacing water, which makes this big bottle a practical staple for the dedicated hobbyist. As part of their ongoing environmental stewardship efforts, Seachem notes they will donate a portion of the profits for every specially labeled bottle. Because Prime is concentrated, a little goes a long way, and this 1-gallon size gives you a long-running supply for a tank you care about. Give your aquatic family a steadier, better-conditioned home, one water change at a time, with Seachem Prime.