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Deal.ai › Seachem
Seachem
Seachem Prime Marine & Freshwater Conditioner

Seachem Prime Marine & Freshwater Conditioner

4.5(31 ratings)

Best price now

$4.84at Current Tides AquariumsChecked 1 h ago

77% under what the other stores charge

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $4.84 at Current Tides Aquariums (checked Nov 12, 2026).
  • Checked at 3 stores.

Seachem Prime Marine & Freshwater Conditioner prices at every store

  • Current Tides AquariumsNew

    In stock

    $4.84Checked 1 h ago
    Visit Current Tides Aquariums
  • TK AquaticsNew

    In stockReturn policy

    $20.99Checked 1 h ago
    Visit TK Aquatics
  • Salty Aquatics & FishNew

    In stockReturn policy

    $20.99Checked 1 h ago
    Visit Salty Aquatics & Fish

Also available at

  • PetSmartCheck price at PetSmart
  • The Hidden ReefCheck price at The Hidden Reef
  • That Fish PlaceCheck price at That Fish Place
  • SaltwaterAquarium.comCheck price at SaltwaterAquarium.com
  • Russell Feed & SupplyCheck price at Russell Feed & Supply
  • Poudre Pet and Feed SupplyCheck price at Poudre Pet and Feed Supply
  • Pet SupermarketCheck price at Pet Supermarket
  • AmazonCheck price at Amazon
  • Petco.comCheck price at Petco.com
  • Jellyfish ArtCheck price at Jellyfish Art
  • Fish Tanks DirectCheck price at Fish Tanks Direct
  • eBayCheck price at eBay
  • Essex Marine AquaticsCheck price at Essex Marine Aquatics
  • Dubia.comCheck price at Dubia.com
  • AquaCave.comCheck price at AquaCave.com

Store links may earn us a commission.

Seachem Prime Marine & Freshwater Conditioner price history

Lowest price we've seen: $3.19 on Nov 12 at PetSmart. Tracked across 14 stores since Nov 12.

What reviewers say

  • 4.5 / 531 ratings

About the Seachem Prime Marine & Freshwater Conditioner

Description

Prime® is the complete and concentrated conditioner for both fresh and saltwater. Prime® removes chlorine, chloramine and detoxifies ammonia. Prime® converts ammonia into a safe, non-toxic form that is readily removed by the tank’s biofilter. Prime® may be used during tank cycling to alleviate ammonia/nitrite toxicity. Prime® detoxifies nitrite and nitrate, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals found in the tap water at typical concentration levels. Prime® is non-acidic and will not impact pH. Prime® will not overactivate skimmers. Use at start-up and whenever adding or replacing water.

When transporting or quarantining fish, use Seachem Stressguard . When adding new fish, use Stability . Both are ideal for use with Prime®.

Nearly all companies manufacture a product that removes chlorine. None of those, however, can compare in quality, concentration, or effectiveness to Seachem’s flagship product: Prime®. Prime® is the second most concentrated dechlorinator on the market after our own aquavitro alpha™. A single 100 mL bottle will treat 1000 US gallons of tap water. Prime® will remove both chlorine and chloramines from municipal water supplies.

Prime® also contains a binder which renders ammonia, nitrite, and nitrate non-toxic. It is very important to understand how those two functions work together. All dechlorinators operate through a chemical process known as reduction. In this process, toxic dissolved chlorine gas (Cl 2 ) is converted into non-toxic chloride ions (Cl-). The reduction process also breaks the bonds between chlorine and nitrogen atoms in the chloramine molecule (NH 2 Cl), freeing the chlorine atoms and replacing them with hydrogen (H) to create ammonia (NH 3 ).

Questions and answers

Where is the Seachem Prime Marine & Freshwater Conditioner cheapest?
At Current Tides Aquariums, for $4.84, 77% under what the other stores charge, as of our latest check.
What do buyers say about the Seachem Prime Marine & Freshwater Conditioner?
Rated 4.5 out of 5 from 31 ratings.
Where can I buy the Seachem Prime Marine & Freshwater Conditioner?
18 stores we checked sell it, including TK Aquatics, Salty Aquatics & Fish, Current Tides Aquariums, PetSmart, The Hidden Reef.

Typically, dechlorinators stop there, leaving an aquarium full of toxic ammonia! Seachem takes the necessary next step by including an ammonia binder to detoxify the ammonia produced in the reduction process.

Be very careful when purchasing water conditioners. If your municipality includes chloramines in the water supplies, a standard sodium thiosulfate dechlorinator is not enough. Prime® promotes the natural production and restoration of the slime coat rather than relying on artificial or non-native slime compounds. A further bonus for the reef hobbyist—Prime® will not overactivate protein skimmers.

Directions

Use 1 capful (5 mL) for each 200 L (50 US gallons) of new water. For smaller volumes, please note each cap thread is approximately 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.

Features

• Complete and concentrated conditioner for both fresh and saltwater

• Removes chlorine, chloramine

• Detoxi?es ammonia, nitrite, and nitrate

• 5X more concentrated than competing products

Overview

Nearly all pet aquatics companies manufacture a product that removes chlorine. None of those, however, can compare in quality, concentration, or effectiveness to Seachem’s flagship product: Prime®. Prime® is the complete and concentrated conditioner for both fresh and saltwater. Prime® removes chlorine, chloramine and detoxifies ammonia, nitrite, and nitrate. Prime® promotes the natural production and restoration of the slime coat rather than relying on artificial or non-native slime compounds. It is non-acidic and will not impact pH. A further bonus for the reef hobbyist—Prime® will not over-activate skimmers.

Prime ® is up to 5x more concentrated than competing products and is the second most concentrated dechlorinator on the market only after our own aquavitro ® alpha™ .

Prime® may be used during tank cycling to alleviate ammonia/nitrite toxicity. It contains a binder which renders ammonia, nitrite, and nitrate non-toxic, allowing the biofilter to more efficiently remove them. It will also detoxify any heavy metals found in the tap water at typical concentration levels. Use at start-up and whenever adding or replacing water. When transporting or quarantining fish, use Seachem StressGuard™. When adding new fish, use Stability®. Both are ideal for use with Prime®.

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