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Seachem Prime 100ml

Price:  7.49

Aqua points: 7 [read more]
Stock: In stock
Model: 020040
Manufacturer: Seachem


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. It will also detoxify any heavy metals found in the tap water at typical concentration levels. 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.

Why It's Different
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 (Cl2) is converted into non-toxic chloride ions (Cl-). The reduction process also breaks the bonds between chlorine and nitrogen atoms in the chloramine molecule (NH2Cl), freeing the chlorine atoms and replacing them with hydrogen (H) to create ammonia (NH3).

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.

Use 1 capful (5 mL) for each 200 L (50 gallons*) of new water. This removes approximately 1 mg/L ammonia, 4 mg/L chloramine, or 5 mg/L chlorine. For smaller doses, please note each cap thread is approx. 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 > 30C and chlorine or ammonia levels are low, use a half dose.

Date Added: 04/05/2014 by Colin Jones

Super fast delivery as always. Bought prime of all the great reviews. Highly concentrated so will last months.

Date Added: 28/11/2013 by Darren Knaggs

I decided to make the switch to Seachem Prime as i'm using Seachem Purigen in my external filter.It's recommended to use Prime with Purigen if you want to recharge the Purigen with bleach.Prime is an excellent water conditioner and great value for money as it's super concentrated.You can treat 200L with just just 5ml of prime! It's great just to keep in your cabinet in case of emergencies such as power cuts...just adding a cap of prime direct to your tank or a double dose will keep everything in check till you get switched back on for peace of mind.I noticed a huge difference when i did a water change with Prime for the first time.Shortly after my fish just seemed more active and their appetites improved even with shy fish.Just wish i'd heard about it sooner and used it when i first started years ago.Seachem are a really friendly company to ask any questions you throw at them by email too and value their customers which is great for any questions you may have about their products.

Date Added: 01/11/2013 by Louis Finnie

Fast delivery, good price, will be buying again.

Date Added: 22/10/2013 by Michal Karpisiewicz

Top notch product.

Date Added: 17/10/2013 by Michal Karpisiewicz

Great product. Well recommended. Just read reviews on other websites as well and you will not go for anything else. Really concentrated so lasts looong. Thanks.

Date Added: 07/10/2013 by Adam Leci

Excellent value for money. Possibly the cheapest you can buy Prime on the net. I only need around .2ml per water change, so this will last me a LONG time! I ordered at 2am: my order was shipped at 9am, and arrived the next day. Excellent service as ever. Many thanks.

Date Added: 06/06/2013 by John Barrett

As is well known this is a great product and as always delivered super fast. Great service from Aqua essentials

Date Added: 28/01/2013 by Imogen Sherriff

Well it seems to work fine so far - I bought it for removing chloramine which Tap Safe doesn't.

Date Added: 27/12/2012 by john mckeeman

good product

Date Added: 05/11/2012 by Henry Graham

Seachem strikes again! Does everything you'd want a de-chlorinator to do. It's also incredibly concentrated, so it works out a LOT cheaper than other brands. For smaller tanks, a 1ml syringe from your local pharmacy is useful for accurately measuring how much you need.

Date Added: 06/09/2010 by Stuart Halliday

Seachem Prime is without doubt the finest and best value for money water conditioner on the market. It makes ammonia, nitrite and nitrate 100% non-toxic and it also contains a metal chelator so any nasty potential metals in your water get made safe too. No other product on the market does that. Seachem claim it is the most concentrated WC on the market and I can believe it. You get a lot of Prime for your money as 5ml treats 200L of tank! It's also nice to know that Seachem give a lot of support for their product if you visit their web site. You can safely submit a question and get a knowledgeable answer from experts. So you've got the backing of a serious aquarium manufacturer who products are all top quality and for me this seals the deal. I've been using Prime for over 6 years now. I wouldn't use anything else. As I'm administrator of The Aquarium Wiki Encyclopaedia web site, I now recommend it to beginners in cycling a tank during that initial first month period. By adding a small quantity of Prime every day the fish don't die due to overfeeding or nitrogen poisoning. The two most common causes of death for newbies. It's the modern, easy and safe way to raise fish. http://www.theaquariumwiki.com/Beginning_Fishkeeping http://theaquariumwiki.com/Prime

Date Added: 29/08/2010 by Sarah Skedgel

A little really does go a long way. 1ml will treat 10 us gallons,so can be tricky to measure for smaller tanks. Every one talks about Seachem Prime being the best and so far I agree.

Date Added: 11/07/2010 by Andrew Tierney

Decent tap water conditioner. More concentrated than any other I have found, so your money goes that little bit further. The chemistry it relies on is good at removing chlorine, chloramine and ammonia. It can be hard dosing this appropriately for a small aquarium, but Seachem claim that it doesn't have a noticeable effect on oxygen levels.

Ask a question about this product
Hi i'd like to switch to Prime instead of the Nutrafin Aqua Plus i'm using at the moment because i've started to use Seachem Purigen now in my external filter and would like to use a conditioner with no added stress coat properties.Is it safe to just suddenly switch water conditioners like that as Prime is very strong in concentration?Is there a certain way i should make the change from one to another.I have a noticed a new baby platy in my planted tank recently and would not like to lose it to a sudden change in water chemistry.Darren.


It's perfectly safe to switch over.

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