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Seachem AmGuard 500ml

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4.7 424 ratings

Amazon's Choice in Aquarium Water Treatments by Seachem

$19.46 with 5 percent savings

List Price: $20.38

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Purchase options and add-ons

Brand	Seachem
Liquid Volume	500 Milliliters
Item Weight	1.15 Pounds
Item Form	Liquid
Allergen Information	Yam Free

About this item

Removes Toxic Fee Ammonia
Will Not Alter Ph.
DE chlorinates and removes chloramine

Customer ratings by feature

Easy to use

4.8

Stability

4.6

Value for money

4.6

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Seachem Stability Fish Tank Stabilizer - For Freshwater and Marine Aquariums, 16.9 Fl Oz (Pack of 1)

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Seachem StressGuard Slime Coat Protection - Stress and Toxic Ammonia Reducer 500 ml

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From the manufacturer

Seachem AmGuard

Detoxifies ammonia for up to 72 hours
Ideal for emergency situations
More effective than any other ammonia-binding product

AmGuard safely, rapidly and efﬁciently detoxifies toxic free ammonia. It is safe to use during tank cycling and is ideal for treating emergency situations. It works within minutes to detoxify free ammonia, and it doesn’t degrade for nearly 72 hours. That’s at least twice as long as our competitors’ products. Unlike competing products, AmGuard converts it into a safe, non-toxic form that is readily removed by the tank’s biofilter. It does not alter pH.

Product Description

AmGuard safely, rapidly and efﬁciently detoxifies toxic free ammonia. It is safe to use during tank cycling and is ideal for treating emergency situations. AmGuard is the strongest liquid ammonia binder on the market. It works within minutes to detoxify free ammonia, and it doesn’t degrade for nearly 72 hours. That’s at least twice as long as our competitors’ products. Unlike competing products, AmGuard converts it into a safe, non-toxic form that is readily removed by the tank’s biofilter. It does not alter pH. Ammonia can exist in two forms: free and ionized. It is only the free form that is toxic. Traditional ammonia test kits convert all ammonia to free ammonia by raising pH to 12–14; at this pH AmGuard cannot function and thus a false positive reading will result. For long term ammonia control, use Seachem Stability and Matrix. Use Ammonia Alert or MultiTest Free & Total Ammonia to directly monitor levels of free ammonia. AmGuard also removes chlorine and chloramines.

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Product information

Item Weight

1.15 pounds

Manufacturer

Seachem Laboratories, Inc.

ASIN

B0006JLXGU

Country of Origin

USA

Item model number

773

Customer Reviews

4.7 424 ratings

4.7 out of 5 stars

Date First Available

June 15, 2004

Item Package Dimensions L x W x H

7.49 x 2.36 x 2.32 inches

Item Dimensions LxWxH

7.5 x 2.2 x 1.5 inches

Item Weight

1.15 Pounds

Brand Name

Seachem

Target Audience Keyword

fish

Directions

Use 1 capful (5 mL) for every 200 L (50 US gallons) daily or as needed to reduce ammonia. ADVANCED: If you have an Ammonia Alert® that is reading “Alert”, then use 1 capful (5 mL) for every 400 L (100 US gallons) daily. If it reads “Alarm”, then use 1 capful for every 200 L (50 US gallons) daily. If it reads “Toxic”, then use 1 capful for every 80 L (20 US gallons) daily. EXPERT: If using our MultiTest™ Free & Total Ammonia test kit, use 1 capful (5 mL) for every 40 L (10 US gallons) to remove 1 mg/L (ppm) of free ammonia. Alternatively you may employ the following formula for a variety of ammonia and water levels: 0.125AV=m (for volume in liters) or 0.5AV=m (for volume in gallons). A=ammonia concentration in mg/L, V=the volume of water being treated and m=the volume of AmGuard™ to use in mL. For example, to remove 1 mg/L of ammonia in 100 gallons you would use 0.5*1*100=50 mL. If water temperature is above 30 °C (86 °F) do not use.

Model Name

AmGuard 500 ml

Color

clear

Size

100 mL, 250 mL, 500 mL, 4 L

Age Range Description

All Life Stages

Number of Items

Manufacturer

Seachem Laboratories, Inc.

Specific Uses for Product

Active

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Product details

Is Discontinued By Manufacturer ‏ : ‎ No
Product Dimensions ‏ : ‎ 7.5 x 2.2 x 1.5 inches; 1.15 Pounds
Item model number ‏ : ‎ 773
Date First Available ‏ : ‎ June 15, 2004
Manufacturer ‏ : ‎ Seachem Laboratories, Inc.
ASIN ‏ : ‎ B0006JLXGU
Country of Origin ‏ : ‎ USA

Best Sellers Rank: #51,707 in Pet Supplies (See Top 100 in Pet Supplies)
- #510 in Aquarium Water Treatments

Customer Reviews:
4.7 424 ratings

Top Brand: Seachem

Highly Rated

100K+ customers rate items from this brand highly

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	This Item Seachem AmGuard 500ml	Recommendations Seachem Pristine Aquarium Treatment, 500ml (001438)	dummy Seachem Reef Complete 500ml	dummy Seachem Fresh Trace 500ml	dummy 250Ml, Paraguard Parasite Control	dummy Seachem Stability - For Freshwater and Marine Aquariums 250ml
	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart	Try again! Details Added to Cart
Price	-5% $19.46 List: $20.38	$22.26	$10.59	$14.14	-12% $13.20 List: $14.96	-55% $8.00 List: $17.96
Delivery	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11	Get it as soon as Saturday, May 11
Customer Ratings	4.7424	4.72,285	4.7661	4.5348	4.771	4.84,994
Easy to use	4.8	4.5	4.7	4.2	5.0	4.9
Value for money	4.6	4.4	4.6	3.9	4.3	4.4
Stability	4.6	4.5	—	4.5	4.4	4.6
Sold By	Amazon.com	Amazon.com	Amazon.com	WoWingPets	Warehouse Limited	Amazon.com
target species	—	fish	Fish	Fish	Fish	Fish
liquid volume	500 milliliters	500 milliliters	500 milliliters	500 milliliters	250 milliliters	250 milliliters
form	Liquid	Liquid	Liquid,Ionic	Liquid	—	Stick
weight	1.15 pounds	1 pounds	0.6 kilograms	1 pounds	0.62 pounds	8 ounces

Customer reviews

4.7 out of 5

424 global ratings

How customer reviews and ratings work

Customers say

Customers like the quality, ammonia detoxification, and emergency use of the aquarium pond water treatment. They mention that it works like magic, is great for emergency use, and is the safest product.

AI-generated from the text of customer reviews

12 customers mention12 positive0 negative

Customers are satisfied with the quality of the aquarium pond water treatment. They mention it works like magic, is great for emergencies, and is an excellent product.

"Excellent product. Definitely the best ammonia treatment out there. Why?..." Read more

"Works perfectly" Read more

"I used this product to detoxify my freshwater fish tank. It seems to have worked well as my fish are Alive in the face of an ammonia level between..." Read more

"Works like magic great for emergency or any other reason you need to bring down ammonia in tank.." Read more

5 customers mention5 positive0 negative

Customers find the ammonia detoxification of the aquarium pond water treatment excellent. They say it does a great job of reducing ammonium and neutralizing the poisonous effects of ammoniu. They also say it binds the molecules to make the ammonu safer.

"...AmGuard binds it to neutralize the poisonous effects of ammonia, but still allows your filter's bacteria to utilize it and multiply -- which is the..." Read more

"this is an excellent product to manage ammonia until you do water changes (lasts 48 hours) it binds the molecules to make the ammonia safer..." Read more

"Great product for ammonia spike" Read more

"Does a great job of reducing Ammonia. I love all of the Seachem products." Read more

3 customers mention3 positive0 negative

Customers say the aquarium pond water treatment is great for emergency use. They say it's the safest and works well.

"...will always keep a non-expired bottle of this stuff on hand, great for emergency use!" Read more

"Seachem is the only brand I use. I've tried them all and these are the safest and they acrually work." Read more

"Like it says, great in emergency situations..." Read more

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Jacob

Ammonia crisis? Buy this.

Reviewed in the United States on August 13, 2016

Verified Purchase

Excellent product. Definitely the best ammonia treatment out there. Why? Because it does not simply reduce ammonia to its less toxic form, like most treatments. AmGuard binds it to neutralize the poisonous effects of ammonia, but still allows your filter's bacteria to utilize it and multiply -- which is the only way to get out of an ammonia crisis. When you reduce ammonia to its less toxic form, not only can your filter not utilize it, but you also increase the pH of your aquarium, which can kill your fish just as easily as ammonia toxicity.

18 people found this helpful

Helpful

Ben

Good

Reviewed in the United States on December 31, 2023

Verified Purchase

Works

Helpful

JackSprat0006

SAVED MY TANK, Immediately effective!!

Reviewed in the United States on January 12, 2021

Verified Purchase

Unfortunately overloaded the biofiltration in my planted tank and added too many fish at once/overfed/overcleaned. I thought the existing filter could handle it but poof, big while cloud one day. Well I figured the ammolock I had would help tide the tank over until the bacteria caught up but it kept going up and my poor fish were gasping for air/overstressed. I looked on the bottle and my ammo lock was expired since 2017! So, I immediately I went to the local petco to pick up a small bottle of AmGuard and when i came back, some of my fish were worse off near death while my ammo levels were off the charts. I quickly did the expert level dose in my tank and my motionless fish revived themselves within seconds.. It bought me time, I immediately did a 50% water change and the fish looked so much better and everyone survived the ammo stress. Over the next 72 hours I did 50% water changes daily cleaning the gravel and curbed feedings until my ammo levels got under control and used this to keep the fish alive and happy while the tank cycled. Now my tank is near cycled with my nitrates finally rising. I will always keep a non-expired bottle of this stuff on hand, great for emergency use!

12 people found this helpful

Helpful

leroy

Must have with fish.

Reviewed in the United States on May 12, 2021

Works perfectly

Reviewed in the United States on June 6, 2023

Verified Purchase

Used product as soon as it came in. Within hours my tank was rid of ammonia

One person found this helpful

Helpful

Jose Luis Urdaneta

Excelente producto

Reviewed in the United States on March 12, 2023

Verified Purchase

Es muy eficiente para bajar los amonios del acuario

2 people found this helpful

Helpful

Translate review to English

K9Lover

Good for Detoxification of Ammonia

Reviewed in the United States on December 27, 2018

Verified Purchase

I used this product to detoxify my freshwater fish tank. It seems to have worked well as my fish are Alive in the face of an ammonia level between one and three. Very strong so have to be careful re dosing

One person found this helpful

Helpful

wendy

Makes fish happy

Reviewed in the United States on April 16, 2021

Verified Purchase

Works like magic great for emergency or any other reason you need to bring down ammonia in tank..

One person found this helpful

Helpful

Top reviews from other countries

Translate all reviews to English

brynn

Great product

Reviewed in Canada on January 31, 2022

Verified Purchase

I liked how little of the product you have to use, and having excellent piece of mind knowing your ammonia isn’t going to spike during a cycle (first set up or accident cycle)

One person found this helpful

Rich Review’s

I swear by this product

Reviewed in the United Kingdom on June 9, 2023

Verified Purchase

When ever my Seneye reef reading shows nh3 is 0.028 for example, I use this and in a few hours it always drops back to 0.001 and it stays there. I’m a bit heavy handed when I feed my multiple fish in 300l normal one or two doses (not going to lie I do need to work on that)

David Castro Peña

Seguro

Reviewed in Spain on May 28, 2022

Verified Purchase

Siempre uso productos de esta marca y este en concreto me ha ayudado bastante con picos de nitritos y problemas en el acuario, desde entonces siempre lo uso en los cambios de agua junto con seachem prime, te ayuda mucho junto con los cambios de agua a reducir y mantener bastante a raya los niveles de amoniaco.

Translate review to English

Frederic F.

Drop Ammonia without raising Ph

Reviewed in Canada on November 26, 2020

Verified Purchase

Had an emergency in my tank, ammonia went to 4.0ppm. I used 50 ml of this AmGuard for my 46 Gallon tank over the course of 3 days, not ammonia is below 0.1ppm. Very impressed

Violet The Organ Grinder

You need to test for Free Ammonia after using this! Total Ammonia tests will show positive!

Reviewed in the United Kingdom on February 24, 2021

Verified Purchase

I'm a big fan of Seachem products, but what a lot of people don't know, when using Safe, AmGuard, Prime or anything which detoxifies ammonia, your ammonia test will still show ammonia present.
This is because tests like API Master Test test for Total Ammonia by raising the pH, which stops the binder working and shows the ammonia as still being high.
Get yourself the MultiTest Ammonia (Free & Total) test kit (also Seachem) and it will show you the difference.
No, I am not on commission, lol, but I have done a lot of reading and used these products a while. And I can tell the product is working from the behaviour of my fish.
If you have an ammonia spike, I would recommend this product, but a lot of the Seachem products detoxify ammonia (Safe, Prime, Neutral Regulator).
Just make sure you are not testing Total Ammonia - this will still read a problem! It's the Free Ammonia NH3 which is the toxic version.

One person found this helpful

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