Seachem Prime Aquarium Water Conditioner 500ml

Seachem Prime Aquarium Water Conditioner 500ml – Your Go-To Solution for Clean, Safe Tank Water

 That’s where Seachem Prime Aquarium Water Conditioner 500ml is a trusted, high-powered treatment that keeps water safe in both freshwater and saltwater setups. Tap water can be full of heavy metals and chlorine your fish don't thrive in, and Prime helps eliminate unsafe water parameters. Whether you're doing a quick top-off or a full water change, this aquarium water conditioner handles the heavy lifting.

Why Seachem Prime Aquarium Water Conditioner Is a Hobbyist Favorite

Some water conditioners just neutralize chlorine. Prime? It goes further. It also detoxifies ammonia, nitrite, and nitrate—without messing up your pH or triggering a protein skimmer foam party. It's concentrated, effective, and built for real-world aquarists who don’t want surprises in their tank.

What sets Seachem Prime apart:

• Removes chlorine and chloramine from tap water

• Detoxifies ammonia, nitrite, and nitrate

• Won’t alter your tank’s pH or hardness

• Safe for freshwater, saltwater, and reef tanks

• Skimmer-safe for sensitive reef systems

• Supports biological filtration by binding harmful compounds

Seachem Prime Aquarium Water Conditioner 500ml Is Built for Long-Term Use and Emergency Backups

With 500 milliliters in your toolkit, you’ll be treating up to 5,000 gallons of water. That’s a ton of peace of mind in one bottle—whether you're prepping water for a 5-gallon shrimp tank or a 120-gallon reef beast.

Directions for Use:

• Use 1 capful (5 mL) per 50 U.S. gallons of new water

• Each cap thread = ~1 mL for smaller tanks

• Add to new water before it enters the tank, if possible

• Double dose for high chloramine levels

• Use up to 5x dose during emergency ammonia or nitrite spikes

• For temps above 86°F, use half the dose if ammonia/chlorine is low

• Sulfur smell is normal—don’t worry, your tank’s not turning into a volcano

When and Where to Use Seachem Prime Aquarium Water Conditioner 500ml

Prime isn’t a once-in-a-while thing. It belongs in your regular rotation and your emergency stash.

Use it when:

• Starting up a new aquarium

• Doing partial or full water changes

• Cycling tanks with live fish

• Introducing new fish or corals

• Handling ammonia or nitrite spikes

• Moving or quarantining livestock

Pair it with Seachem StressGuard for fish in transit or Seachem Stability when cycling a new tank.

Product Specs – Seachem Prime Aquarium Water Conditioner 500ml

• Size: 500ml

• Treats: Up to 5,000 U.S. gallons of water

• Weight: ~1.05 lb

• Dimensions: 8 inches x 2.4 inches x 2.4 inches (length x width x height)

• Safe For: Saltwater, Freshwater, Reef Tanks, and Invertebrates

• Formula: Liquid, non-acidic, and concentrated

Seachem Prime Aquarium Water Conditioner 500ml Is Tank-Safe, Reef-Safe, and Stress-Free

Fishkeeping can be unpredictable. Water shouldn’t be. With Seachem Prime Aquarium Water Conditioner 500ml, you're getting a high-performance solution trusted by aquarists around the globe. It works fast, it works well, and it doesn’t come with surprises.

It’s the bottle you reach for when water quality matters most.

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