Skip to main content
Save 10% OFF Today

Seachem Ammonia Alert Sensor for Fresh & Saltwater Aquariums by by Seachem

Clearance
$7.35Lower Price in Cart
  • $11.99
  • (39%)
IN STOCK - FREE SHIPPING OVER $49
SKU: SC00100
UPC: 000116001007
MPN: 00100
$20.95Lower Price in Cart
  • $37.99
  • (45%)
IN STOCK - FREE SHIPPING OVER $49
SKU: SC00100M
UPC: 700256882961
MPN: 00100M
Size:

Questions? Our pet experts are here to help!

1-888-373-8686 [email protected]

Product Description

Seachem Ammonia Alert is an innovative color device for continuously detecting and monitoring free ammonia in aquariums. A sensor changes from yellow to green to blue, relative to the ammonia concentration in the water. Seachem Ammonia Alert detects less than 0.05 mg/L (ppm) free ammonia and alerts you before fish show any signs of stress. It lasts over a year and replacement sensors are available.

  • Easy visual gauge to monitor ammonia in your reef or fish tank
  • Use in saltwater or freshwater aquariums
  • Provides 1 year of ammonia detection

In the absence of free ammonia the unit will assume a yellow or faint yellow-green color. It is normal for the dry sensor to have a greenish hue. It may take up to a few days for a dry sensor to equilibrate with the water. No sampling of water or test procedures are required. The presence of the free ammonia is detectable continuously with a response time of about 15 minutes. Response to decreasing ammonia is slower, requiring about 4 hours to register a SAFE reading.

You May Also Like

Best Seller
More Choices Available

Tetra Tetra Easystrips 6-in-1 Aquarium Test Strips

$9.71 - $71.47
  • $150.99
  • Save $80 (53%)
FREE shipping over $49
Best Seller
More Choices Available

API API 5 in 1 Aquarium Test Strips

$5.75 - $144.63
  • $318.99
  • Save $174 (55%)
FREE shipping over $49
Best Seller

API API Ammonia NH3/NH4+ Test Kit

$10.55
  • $16.99
  • Save $6 (38%)
FREE shipping over $49
Best Seller

API API Nitrate Test Kit for Fresh & Saltwater Aquariums

$11.06
  • $17.99
  • Save $7 (39%)
FREE shipping over $49
Best Seller
More Choices Available

API API Marine Saltwater Master Test Kit

$23.22 - $67.57
  • $141.99
  • Save $74 (52%)
FREE shipping over $49
More Choices Available

API API High Range pH Test Kit for Fresh & Saltwater Aquariums

$6.22 - $16.79
  • $30.99
  • Save $14 (46%)
FREE shipping over $49

Customer Reviews

80%
10%
0%
10%
0%
B
Bill, Gastonia NC on 2014/06/22
It's a snap to use.

Handy little gadget. Unobtrusive, yet very visible. One caveat: The instructions don't mention it, but you're supposed to match the graphic's center dot color with the indicator guide-colors. Ammonia level equals whatever color matches the center dot. Highly recommended 5 Stars .

D
Dave, Cedar City UT on 2014/01/12
A must have for new aquariums!

I recently set up a new aquarium using AmmoniaAlert and because I am constantly able to see the ammonia level, my fish are happy and all alive! Now that I have seen how great it works, I will never set up an aquarium without it.

J
John, Glen Allen VA on 2013/11/13
Not as good as expected

I have had good success with Seachem products. I bought this one expecting the same quality. My wife sprayed a large quantity of Febreeze in the room where the aquarium was located. I noticed cloudy water and a film on top of the water the next morning. I did a water test and the ammonia was off the charts. The Ammonia Alert never changed from the safe level. Even after two weeks of the ammonia levels exceeding 5ppm the Ammonia Alert has never changed colors from the safe level.

S
Susan, Oklahoma City OK on 2013/01/31
Ammonia Alert!

Ensure you have a current ammonia alert in your aquarium. This is especially true if setting up a new aquarium. Levels must be checked for the aquarium to cycle properly. Then keep a watch out for a spike as high ammonia can kill your fish.

K
Keith, Tylertown MS on 2013/01/08
Great Monitor

If you want to keep a eye on free ammonia then this is the monitor to have. Been running it for 4 months and test it periodically works flawless. I will be purchasing more of them.

G
Glitched, Independence MO on 2012/12/31
Accurate

I bought this for my nieces' tank, that I got them for Christmas, to make sure that my sister could pay attention to one of the most important aspects of having a fish tank. With this product, I was able to tell her that when it changed colors it was time to change the water, but also told her to make a regular water change a week. It is a great peace of mind knowing that for the first few critical weeks before the tank was cycled it would at least give her a starting index of when she needed to change the water. I just wish there was one for Nitrite and Nitrate.

L
Liz, Bronx NY on 2011/06/21
So far so good....Its only been a week.

Ill write another review after a few months....

J
Jackie, Pacific Grove CA on 2008/01/15
If you have an aquarium - GET ONE OF THESE

Seachem Ammonia Alert Devise is one of the greatest inventions of the century. Everybody with an aquarium should have one of these in every tank. Pet Mountain offers the best pricing on this item I've seen around. They ship promptly and the product is always received in great condition.

A
Alys, Corona Del Mar CA on 2007/11/05
Accurate & Time-saving!

While cycling my new freshwater tank, I was testing the ammonia with a 2-part chemical test twice daily. I bought the Seachem in-tank monitor and compared it to the results of the chemical tests over several days...They had identical readings throughout the daily fluctuations in ammonia levels. What a convenient, useful invention!!!

A
Arleen, New York NY on 2007/10/01
"Every fish tank should have one!"

When we first set up our tanks we had ammonia problems. I bought Ammonia Alert and never had to test all the time with chemicals.