Seachem Prime Water Conditioner 100 ml
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Seachem Prime Water Conditioner 100mL – The Aquarium Supplement Every Fish Tank Needs
If you’ve kept a fish tank longer than a week, you already know: untreated tap water is public enemy number one. Seachem Prime Water Conditioner 100mL is the go-to aquarium supplement that makes your water safe, your fish happy, and your skimmer calm.
This isn't your average fish tank water conditioner. It's ultra-concentrated, fast-acting, and reef-safe.
What Makes Seachem Prime an Exceptional Aquarium Water Conditioner?
Plenty of brands promise to detox your water. But Seachem Prime actually does the job—without tossing your pH into chaos or waking up your protein skimmer like it's had three espresso shots.
Seachem Prime 100mL key functions:
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Removes chlorine and chloramine on contact
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Detoxifies ammonia, nitrite, and nitrate for up to 48 hours
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Binds heavy metals commonly found in tap water
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Supports the biofilter by rendering toxins non-toxic
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Does not affect pH or interfere with filtration equipment
Most dechlorinators stop after neutralizing chlorine. Not Prime. It handles the aftermath, detoxifying the ammonia created during chloramine breakdown. That’s like cleaning up the party and doing the dishes.
How to Use Seachem Prime Water Conditioner 100mL Properly
Dosing sounds fancy, but it’s easy once you know the basics. You can dose directly into the tank or into a bucket of new water—either works, but pre-mixing is usually better.
Standard Seachem Prime Dosage:
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1 capful (5 mL) for every 50 U.S. gallons of new or replacement water
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Each cap thread equals ~1 mL for smaller tanks
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Use 2 drops per gallon if you're micro-dosing
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For high chloramine levels, double the dose safely
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For emergencies like ammonia spikes, use up to 5x normal dose
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If water temperature is over 86°F, use half dose if chlorine is low
Yes, it might smell like sulfur. No, your tank isn’t going bad—it just means Prime is doing its thing.
Why Seachem Prime Water Conditioner Is a Smart Choice for Aquarium Hobbyists
Whether you're running a nano reef or a 125-gallon freshwater community tank, Prime is one of those products you should always have on standby. It plays well with others, too—pair it with Seachem Stability when adding fish, or StressGuard during transport or quarantine.
Seachem Prime Water Conditioner 100mL is ideal for:
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Freshwater and saltwater tanks
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Reef tanks (skimmer-safe!)
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Emergency detox situations
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Fish acclimation and transport
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Cycling new aquariums
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Routine water changes
Product Specs – Seachem Prime Water Conditioner 100mL
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Size: 100 mL bottle
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Treatment Volume: Up to 1,000 U.S. gallons
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Safe For: Freshwater, saltwater, reef aquariums, invertebrates, live plants
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Compatibility: Biofilters, skimmers, and most filtration setups
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SKU: 116043404
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UPC: 000116043404
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Dimensions: 5.4″ H × 1.6″ W × 1.6″ L
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Weight: 0.15 lb

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