Search  for anything...
Seachem

Seachem Prime Fresh and Saltwater Conditioner - Chemical Remover and Detoxifier 20L / 5.3 gal

    • Based on 33,584 reviews
Condition: New
Checking for product changes
$324.99 Why this price?

Buy Now, Pay Later

As low as / mo
  • – Up to 36-month term with PayTomorrow
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Monday, Nov 18
Order within 20 hours and 35 minutes
Available payment plans shown during checkout

Size: 20 L


Style: Conditioner


Features

  • Prime Is The Complete And Concentrated Conditioner For Both Fresh And Salt Water
  • Removes Chlorine, Chloramine And Ammonia; Prime Converts Ammonia Into A Safe Nontoxic Form That Is Readily Removed By The Tank'S Biofilter
  • May be used during tank cycling to alleviate ammonia and nitrite toxicity
  • Detoxifies Nitrite And Nitrate Allowing The Biofilter To More Efficiently Remove Them
  • Promotes The Production And Regeneration Of The Natural Slime Coat

Description

Prime is the complete and concentrated conditioner for both fresh and salt water. Prime removes chlorine, chloramine and 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. Prime also promotes the production and regeneration of the natural slime coat. Prime is non-acidic and will not impact pH. Prime will not overactivate skimmers. Use at start-up and whenever adding or replacing water.


Brand: Seachem


Liquid Volume: 20 Liters


Item Weight: 45 Pounds


Item Form: Liquid


Target Species: Fish


Product Dimensions ‏ : ‎ 24 x 18 x 18 inches; 45 Pounds


Item model number ‏ : ‎ 431


Department ‏ : ‎ Home


Date First Available ‏ : ‎ November 8, 2007


Manufacturer ‏ : ‎ Seachem Laboratories, Inc.


Country of Origin ‏ : ‎ USA


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 18

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • Works wonders
Size: 500 mL Style: Conditioner
Review Image by Cory Cory
Doing an emergency fish in cycle for my tank and this stuff is amazing. Can get me through the trials of being a new fish owner and keep him safe till healthy bacteria is established in my tank. Performing Emergency fish-in cycle with Seachem Prime Step 1: Set up your aquarium It’s time to set up your aquarium. And, that includes all the equipment – heaters, filters, air pumps… Get it in there! Don’t forget to rinse it with fresh water first! The beneficial bacteria need a surface to cling to, namely your substrate and filter media. So by setting everything up, you give your bacteria as many surfaces as possible to cling to. Add water to the tank, and don’t forget to dechlorinate it with your water conditioner first. Finally, you want to keep all electrical equipment, such as heaters, filters and bubblers, switched on throughout the entire cycling process. Not only will this keep your fish as comfortable as possible, but it will also make your tank cycle faster. Want to cycle your tank as quickly as possible? Check out FishLab’s tips for speeding up the cycling process. Step 2: Adding your fish Before you add your fish, you want to acclimate them first. This will give them the best chance of survival. You want to feed your fish throughout the cycling process… You don’t want them to starve! When feeding your fish, however, it’s important that you don’t feed them too much. The more you feed them, the more they are going to poop. And the more they poop, the faster your ammonia levels are going to rise. Also, remove any uneaten food from the tank, a good aquarium net will make this easy. Any uneaten food left behind will break down into ammonia, causing the levels to rise. If a fish dies during the cycle, remove it from the aquarium ASAP. Its decaying body will also give off ammonia. Don’t panic if one of your fish dies. It doesn’t necessarily mean that all your fish will – this one might have been extra sensitive. Step 3: Test, test, test, and test again Now, use your ammonia test kit every 24 hours. What you are looking for is any sign of ammonia. Trust me. It won’t be long before it appears. Once your test kit returns positive for ammonia, it’s time to move to the next step. Step 4: Dealing with ammonia Once you detect ammonia, it’s time to start dosing with Seachem Prime. Follow the instructions on the bottle to determine what a single dose would be for your tank – the larger the aquarium, the more Prime you will need. Fortunately, a little goes a long way, and many of you will find that a single bottle of Prime will get you through an entire cycle. For this method, Seachem Prime is the most important ingredient. You see, a dose of Prime will bind ammonia, nitrite and nitrate for 24 to 48 hours, making them harmless to your fish. Picture Seachem Prime locking up ammonia, nitrite and nitrate in a jail cell for up to 48 hours. While in the cell, these nasties cannot harm your fish. However, once their time is up, and they are released, they will once again attack your fish. It is for this reason that you need to dose regularly with Seachem Prime, to keep these nasties locked up. A single dose of Prime will treat up to 1 part per million (ppm) of ammonia. Prime can be dosed up to 5 times safely. So, 2 ppm of ammonia can be treated with two doses of Prime, 3 ppm can be treated with three doses, and so on. Anything less than 1 ppm should be treated with a single dose. Between 1 ppm and 2 ppm, two doses. You get the idea. Oh, and it goes without saying that it’s better to overdose than underdose. *Once your test kit reads 2 ppm of ammonia, you should perform a 50% water change. This should cut your ammonia levels roughly in half. Repeat this process until you notice that your ammonia levels are not rising as quickly as before. Typically, this will take a week or two. When this happens, you are ready to move to the next step. Bookmark this page so that you can easily find it when you are ready for the next step! Step 5: Nitrites start to appear Next, you need to test for nitrites. If none are present, keep repeating the previous step and testing for nitrites daily until you get a positive result. Now that nitrite has entered the equation, you need to make sure you are dosing with enough Prime to protect your fish from both ammonia and nitrites. Fortunately, working out your new dosage is pretty simple – just add your nitrite and ammonia readings together. Let’s say your test returns the following… Ammonia 0.25 ppm Nitrite 1.5 ppm Adding the two together will give you a total of 1.75 ppm. A double dose of Prime will take care of it. This time, if your combined ppm of ammonia and nitrite reaches 4, perform a 50% water change. Keep repeating this. You will eventually notice that your ammonia drops to zero. This is a good thing – bacteria are eating the ammonia as quickly as it is being produced, resulting in a zero reading. Continue daily dosing and testing for ammonia and nitrites. Once your nitrite levels stop rising as quickly, you are ready for the next step. Step 6: Nitrates appear Now, you want to test for nitrates. If none are present, keep repeating the previous step and testing for nitrates daily until you get a positive result. Once nitrates are present, you are nearing the end (woohoo!). Continue testing for ammonia, nitrites and nitrates. Your ammonia levels should still be zero, and your nitrite levels should be declining. Keep dosing with Prime until both your nitrite and ammonia levels are zero. At this stage, the beneficial bacteria are eating them as quickly as they are being produced. Congratulations! You have successfully completed a fish-in cycle. ... show more
Reviewed in the United States on May 2, 2021 by Cory Cory
    • Fish saver for new Tanks
Size: 250 mL Style: Conditioner
Review Image by Equanim1ty Equanim1ty
I never had the patience to wait for nitrogen cycle for any of the tanks however I found a combination that works every single time without a single fish fatality. Seachem Prime+ Tetra self start + API master test kit. Seachem Prime not only dexotify chlorine and metals but also ammonia and nitrites. The two toxins that kills fish in new tanks. It even allows to go upto 5x the dosage so I just test water parameters for first 3 weeks (API master test kit) and manage it with weekly 50% water changes and Seachem prime being added to the water. Usually I mix distilled and tap water at 40/60 ratio to bring the water to right PH and hardness since tap water in my area is highly alkaline. By then the ammonia and nitrite released get attacked by the Tetra beneficial bacteria and the plants suck up the nitrates, they keep multiplying until the tank completes the nitrogen cycle. Another constant is the temperature. I maintain it at 79 for my Bettas and I also use Seachem Acid buffer and Ph regulator sometimes. Legacy way of doing the wait game for nitrogen cycle is not required with products like this in the market. ... show more
Reviewed in the United States on June 22, 2023 by Equanim1ty Equanim1ty
    • Kept my fish safe from ammonia and nitrites
Size: 500 mL Style: Conditioner
When I was first cycling my tank, i had a CRAZY nitrite spike for about a week. I dosed prime daily for the entire time, and none of them died! None of them showed any kind of weird behavior, and none of them showed any signs of gill burn. People on the internet argue about whether this stuff can actually keep your fish safe. I maxed out the nitrites on my api test kit, and they were all fine thanks to seachem prime. ... show more
Reviewed in the United States on July 18, 2023 by TJ
    • Must have
Size: 500 mL Style: Conditioner
I do not live without this stuff. I'm not sure if it's a cheap option or an expensive option for the amount that you get I got the biggest bottle because I need that much. But this is the product that I rely on this is the only brand that I trust and it continues to be reliable since I started having fish tanks years ago. ... show more
Reviewed in the United States on June 29, 2023 by Candice
    • Great product for your fishtank
Size: 100 mL Style: Conditioner
Removes all the chlorine and treats your water for your fish tank.
Reviewed in the United States on July 21, 2023 by william young
    • My go to
Size: 500 mL Style: Conditioner
Use it regularly... Great product, feel comfortable it's helping keep my fishes water safe and healthy
Reviewed in the United States on July 7, 2023 by k w
    • Best aquarium water conditioner
Size: 250 mL Style: Conditioner
Seachem prime is the best aquarium water conditioner on the market. Makes tapwater safe for aquatic life by neutralizing chlorine, ammonia, nitrites and nitrates. Very economical as you use very little to neutralize gallons. Literally just drops.
Reviewed in the United States on June 18, 2023 by Andrew N
    • Good product
Size: 500 mL Style: Conditioner
Always come back to buy more of this for my fish tanks.
Reviewed in the United States on July 4, 2023 by steven h. barnard

Can't find a product?

Find it on Amazon first, then paste the link below.