SKU: 99308241246

[ARRIVED 20-JUN-2025] Seachem Prime 100ml

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Description

[ARRIVED 20-JUN-2025] Seachem Prime 100mlOverview Nearly all pet aquatics companies manufacture a product that removes chlorine. None of those, however, can compare in quality, concentration, or effectiveness to Seachems 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. It is non acidic and will not impact pH. A further bonus for the reef hobbyistPrime will

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. 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®.

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.

FAQ

A: Prime® has a very distinct odor that is similar to sulfur which is completely normal.

A: The presence of small black specks occasionally occurs and is normal.

A: A Nessler based kit will not read ammonia properly if you are using Prime®... it will look "off scale", sort of a muddy brown (incidentally a Nessler kit will not work with any other products similar to Prime®). A salicylate based kit can be used, but with caution. Under the conditions of a salicylate kit the ammonia-Prime® complex will be broken down eventually giving a false reading of ammonia (same as with other products like Prime®), so the key with a salicylate kit is to take the reading right away. However, the best solution ;-) is to use our MultiTest™ Ammonia kit; it uses a gas exchange sensor system which is not affected by the presence of Prime® or other similar products. It also has the added advantage that it can detect the more dangerous free ammonia and distinguish it from total ammonia (total ammonia is both free ammonia and non-toxic ionized forms of ammonia).

A: Prime® works by removing chlorine from the water and then binds with ammonia until it can be consumed by your biological filtration (chloramine minus chlorine = ammonia). The bond is not reversible and ammonia is still available for your bacteria to consume. Prime® will not halt your cycling process.

I am going to assume that you were using a liquid based reagent test kit (Nessler based, silica). Any type of reducing agent or ammonia binder (dechlorinators, etc) will give you a false positive. You can avoid this by using our MultiTest Ammonia kit (not affected by reducing agents) or you can wait to test, Prime® dissipates from your system within 24 hours.

A: The detoxification of nitrite and nitrate by Prime® (when used at elevated levels) is not well understood from a mechanistic standpoint. The most likely explanation is that the nitrite and nitrate is removed in a manner similar to the way ammonia is removed; i.e. it is bound and held in a inert state until such time that bacteria in the biological filter are able to take a hold of it, break it apart and use it. Two other possible scenarios are reduction to nitrogen (N2) gas or conversion into a benign organic nitrogen compound.

I wish we had some more "concrete" explanation, but the end result is the same, it does actually detoxify nitrite and nitrate. This was unexpected chemically and thus initially we were not even aware of this, however we received numerous reports from customers stating that when they overdosed with Prime® they were able to reduce or eliminate the high death rates they experienced when their nitrite and nitrate levels were high. We have received enough reports to date to ensure that this is no fluke and is in fact a verifiable function of the product.

A: Prime® can be dosed every 24-48 hours.

A: Prime® does not remove ammonia, nitrite, or nitrate from the system. It simply binds with those compounds making them harmless to the inhabitants and still bioavailable to the beneficial bacteria.

A: Prime® will bind up those compounds for up to 48 hours. If they are still present after that time frame, they are released back into the water, unless Prime® is re-dosed accordingly. Also, if your ammonia or nitrite levels are increasing within a 24-hour period, Prime® can be re-dosed every 24 hours.

A: If your ammonia or nitrite levels are above 2 ppm, you can safely use up to 5 x the recommended amount.

A: No, as long as Prime® has been stored properly, it will last indefinitely.

A: Prime® can vary in smell based on the parameters in the warehouse during the time of manufacture. It does normally smell of Sulfur, but we have extensively tested the product and found that the difference in scent does not in any way effect how the product functions. It is still perfectly safe to use!

Shipping Notes
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SKU: 99308241246

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4.4 ★★★★★
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Nicholas
Louisville, US
★★★★★ 5
Great base to add patches to
I've bought this jacket twice now (lost the first one...). Great base for my DIY patch jackets. I buy an XL even though it's a size too large for me. It's a standard denim jacket, not much to write home about. Good pocket size, and I appreciate the functional chest pockets.
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Reviewed in the United States on May 19, 2026
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William Harwood
Port Orchard, US
★★★★★ 5
Great Wallet
I'm pretty particular when it comes to things that I need to carry at all times when I'm out. When looking for a new wallet back in 2014, I initially went with the oft recommended Saddleback Leather Medium Bifold. Initially, that wallet seemed to be both durable and well made. Unfortunately, after several months in the back pocket, two things became clear: first, the leather was so taught that it was breaking my credit cards in half at the pinch point of the credit card slot. Second, what I took for durability in the thickness of the leather quickly turned into nuisance as I ended up with an inch thick brick that ruined my seating comfort. I called Saddleback regarding the first point and they told me that it was a known issue and if I didn't like it I could send the wallet back, which I did. That left me at a crossroads with a new requirement: I wanted a leather wallet that was thin enough to not be uncomfortable, held 6 credit/id cards and a handful of bills. I searched around until I came across Bellroy. The travel wallet seemed to check all the boxes and added some features I never knew I needed. After 6 years of use, I finally decided that the original travel wallet I bought in 2014 had run its useful life, down to holes in the leather and all. I liked it so much, I bought another one. There are some subtle differences which I will highlight below. 1. Fits in Your Pocket This is ostensibly the best feature of the wallet. It is large in the two dimensions you shouldn't care about and thin where it counts. I have not found a pair of pants that I would wear that it doesn't fit in. With my passport, 6 credit/id cards, and a dozen bills it is roughly 3/4 inches thick. Fabulous. 2. The Right Pen I had no idea how useful the pen would be. I find occasion to pull it out at least once a week. I used to carry the wonderful Fisher Space Pen, but no longer do as this fills the role in a much for optimized way. Bellroy is kind enough to include an ink refill with every wallet and I still have the refill from 2014. That's not to delegitimize the previous point; the kind of things I write are forms and other short memos. I wouldn't use the pen to write a novel. The new wallet looks to have a pen that Bellroy have either white labelled or made themselves. I haven't yet written with it, but if it is at least as good as the Walkie it replaced, things should be fine. 3. Added Security The new wallet takes the split billfold and adds a flap that conveniently hides away the back section from prying eyes. In theory this seems like a useful feature. In practice, the flap is not quite long enough to allow for more than one or two bills without the cavity being visible when the wallet is opened. The new wallet also has RFID shielding which I don't recall being a feature of the old wallet. It sounds like a useful feature now that at least one of my credit cards has a contactless payment feature. 4. Leather It's a thin wallet so you should expect the leather to be thin as well. I got 6 years out of the first wallet and I'm not a guy who is easy on wallets. It has been in my pocket on rooftops doing solar installations, in machine shops, and on every kind of seat imaginable. My old wallet has been fully submerged in water more than once. With all that punishment, it outlasted the warranty by two times. None of the stitching has failed and the only real damage is two small holes in the outer leatherwork. If you are a business traveler, this should go out of style before it is rendered unusable from wear. In short, this is a great wallet for everyday use. I approve to the extent that I didn't look for a new choice when my old one wore out.
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Reviewed in the United States on March 15, 2020
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Verified Purchase
MSPDX97214
Cuba, US
★★★★★ 5
Very handy
Color: Sienna
I purchased it because I still use paper boarding passes. With luggage claim paper, your passport and ID card, things could get quite messy if you try to put everything in your bag or backpack’s compartment. This one organizes all those nicely. Because of its size it accommodates multiple boarding passes and luggage claim papers easily. (They used to get crumpled in international flights, and It annoyed me.). Yet it is compact enough to carry in your pocket. One negative is its price. It is expensive. But it is a quality product. Nice leather and well made. If you are willing to spend some $, this will spare you from searching your boarding pass and passport frantically at boarding. Highly recommend.
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Reviewed in the United States on July 4, 2025
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JAD
Louisville, US
★★★★★ 5
Excellent product, great for travel
Color: Cocoa
I just got back from a business trip and this is by far the most useful passport holder/wallet I've ever used. Lots of room for cards, bills, boarding passes, and a second passport and still folds very flat. Leather is good quality, and is very well put together. Since its too big for my pocket and will mostly live in my briefcase, I expect it to last a very long time. The only drawback is the high price, especially since the leather is probably not full grain (it's not advertised as full grain, so we can assume it's not). But it fits my needs perfectly, even if it is a little overpriced.
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Reviewed in the United States on October 14, 2023
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Verified Purchase
Faith K.
Charlottesville, US
★★★★★ 5
Highly recommend.
Color: Cocoa
My favorite purchase for a recent trip across three continents. Fits in pocket (I mean it’s a tight fit, but it will fit). Perfect in cargo pant pocket. Has two separate compartments for paper bills which is nice - you can keep your home currency in one and travel currency in the other. Really sleek looking. Bought four of these and we all loved ours. Highly recommend. 
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Reviewed in the United States on July 15, 2025

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