FREE Shipping
Get free shipping
Free 5-8 day shipping within the U.S. when you order $25.00 of eligible items sold or fulfilled by Amazon.
Or get 4-5 business-day shipping on this item for $5.99 . (Prices may vary for AK and HI.)
Learn more about free shipping
on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
& FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
How to return the item?
Arrives: Saturday, Dec 5 Details
Fastest delivery: Monday, Nov 30 Details
In Stock.
Your transaction is secure
We work hard to protect your security and privacy. Our payment security system encrypts your information during transmission. We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. Learn more
Ships from Amazon.com
Sold by Amazon.com
Ships from
Amazon.com

Sold by
Amazon.com

Return policy: Returnable until Jan 31, 2021
For the 2020 holiday season, returnable items shipped between October 1 and December 31 can be returned until January 31, 2021.
API Test Strips, for Vari... has been added to your Cart

Unlock 15% savings

Save 15% when you receive 5 or more products in one auto-delivery to one address. Currently, you'll save 5% on your Jan 27 delivery.

Choose how often it's delivered

From once every 2 weeks to once every 6 months

Skip or cancel any time

We'll send you a reminder before each delivery.
Save 5% now and up to 15% on repeat deliveries.
• No fees
• Cancel anytime
Learn more
Get it Sunday, Dec 6
In Stock.
Deliver every:
Ships from and sold by Amazon.com
Other Sellers on Amazon
Add to Cart
$11.84
+ Free Shipping
Sold by: xssential
Add to Cart
$14.24
& FREE Shipping on eligible orders. Details
Sold by: Nomidi
Add to Cart
$14.24
& FREE Shipping on eligible orders. Details
Sold by: VirVentures

API Test Strips, for Variety of Water Parameters, Monitor Aquarium Water Quality and Help Prevent Invisible Water Problems That can be Harmful to Fish, Use Weekly and When Problems Appear

4.5 out of 5 stars 5,856 ratings
Amazon's Choice recommends highly rated and well-priced products.
Amazon's Choice for "amonia tester for fish tank"

Price: $8.75 FREE Shipping
Get free shipping
Free 5-8 day shipping within the U.S. when you order $25.00 of eligible items sold or fulfilled by Amazon.
Or get 4-5 business-day shipping on this item for $5.99 . (Prices may vary for AK and HI.)
Learn more about free shipping
on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
& FREE Returns
Return this item for free
  • Free returns are available for the shipping address you chose. You can return the item for any reason in new and unused condition: no shipping charges
  • Learn more about free returns.
How to return the item?
25 - Count
Aquarium Water Testing
  • Contains one (1) API AMMONIA TEST STRIPS Freshwater and Saltwater Aquarium Water Test Strips 25-Test Box
  • Monitors water quality and prevents invisible water problems that can be harmful to fish
  • Dip test strips into aquarium water and check colors for fast and accurate results
  • Monitors water quality and prevents invisible water problems that can be harmful to fish
  • Dose several times a week when starting a new aquarium then weekly or when problem arise
New (19) from $8.75 & FREE Shipping on orders over $25.00

Bark If You Want Some: The monthly box your pup deserves. Bark If You Want Some: The monthly box your pup deserves.


Frequently bought together

  • API Test Strips, for Variety of Water Parameters, Monitor Aquarium Water Quality and Help Prevent Invisible Water Problems That can be Harmful to Fish, Use Weekly and When Problems Appear
  • +
  • API AMMO-LOCK Ammonia detoxifier, Detoxifies ammonia toxic to fish in aquarium water and tap water, Use when ammonia is detected
  • +
  • Seachem Ammonia Alert
Total price: $26.14
Buy the selected items together

Special offers and product promotions

Have a question?

Find answers in product info, Q&As, reviews

There was a problem completing your request. Please try your search again later.
All Product Information Customer Q&A's Customer Reviews

Your question might be answered by sellers, manufacturers, or customers who bought this product.

Please make sure that you are posting in the form of a question.

Please enter a question.


From the manufacturer

Test Test Test Test Test Test
API QUICK START API AMMO-LOCK API pH UP API pH DOWN API NITRA-ZORB API PHOS-ZORB
Too much nitrites?
Too much ammonia?
Inappropriate pH levels?
Too much nitrates?
Too much phosphates?

Product description

Size:25 - Count  |  Style:Aquarium Water Testing

Quickly and easily check your aquarium's ammonia levels with API AMMONIA TEST STRIPS. Fish continually release ammonia into the aquarium through their gills, urine and solid waste. Uneaten food and decaying organic matter also add ammonia to the water. Ammonia is toxic to fish and can cause gill damage, stress and death. Regular testing is recommended because ammonia levels can build quickly due to fish waste and uneaten food. Simply dip the test strip into the water, then compare the results with the precise, easy-to-read color-coded chart to determine if any action should be taken. The chart includes recommendations on how to treat the water and neutralize ammonia. Safe for use in fresh and salt water. With API Aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For over 50 years, API has been creating innovative, research-driven solutions that make it easier to care for your fish and aquarium. API Aquarium Treatment Supplies are designed to work in conjunction with each other to provide best results to control algae, promote healthy bacterial growth and help control and cure fish diseases and conditions such as ich and fin rot. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. With API, you can spend more time admiring your fish, and less time scrubbing your tank. Make sure to use all products as directed in order to ensure the best results.


Product details

Size:25 - Count  |  Style:Aquarium Water Testing
  • Is Discontinued By Manufacturer : No
  • Product Dimensions : 3.5 x 1.75 x 5 inches; 1.6 Ounces
  • Item model number : 33D
  • Department : Mens
  • Date First Available : August 2, 2004
  • Manufacturer : Aquarium Pharmaceuticals
  • ASIN : B002DREWMK
  • Customer Reviews:
    4.5 out of 5 stars 5,856 ratings

Important information

Safety Information

Please Read Instructions Before Use

Ingredients

Contains 25 Test Strips.

Directions

In new aquariums, ammonia should be tested every other day until the ammonia level measures 0 parts per million (ppm) or mg/L. In established aquariums, ammonia should be tested weekly to make sure it is at a safe level. This kit contains 25 test strips and reads 0-6 ppm (mg/L) of ammonia in fresh and saltwater. Just dip and read to measure ammonia in one easy step.


Compare with similar items


API Test Strips, for Variety of Water Parameters, Monitor Aquarium Water Quality and Help Prevent Invisible Water Problems That can be Harmful to Fish, Use Weekly and When Problems Appear
TETRA EasyStrips Ammonia Aquarium Test Strips, 100-Count
Seachem Ammonia Alert
Tetra EasyStrips 6-in-1 Aquarium Test Strips for Fresh/Salt Water
Tetra EasyStrips Complete Aquarium Test Kit
RUNBO Aquarium 6 in 1 Test Strips for Fresh/Salt Water, 100 Counts Easy and Accurate Test Nitrate, Nitrite, General Hardness, Free Chlorine,PH, Carbonate
Customer Rating 4.5 out of 5 stars (5856) 4.6 out of 5 stars (432) 4.2 out of 5 stars (2571) 4.6 out of 5 stars (3388) 4.5 out of 5 stars (610) 4.5 out of 5 stars (817)
Price $8.75 $13.40 $7.35 $15.44 $17.59 $13.99
Shipping FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime FREE Shipping on orders over $25.00 shipped by Amazon or get Fast, Free Shipping with Amazon Prime
Sold By Amazon.com Amazon.com Amazon.com Amazon.com Amazon.com SHOPBESTCOLLECTION
Item Dimensions 3.50 x 1.75 x 5.00 inches 1.81 x 1.81 x 3.75 inches 3.40 x 3.30 x 0.70 inches 1.81 x 1.81 x 3.75 inches 6.00 x 4.00 x 1.13 inches 4.72 x 2.17 x 2.17 inches

Customer Questions & Answers

Customer reviews

4.5 out of 5 stars
4.5 out of 5
5,856 global ratings
How are ratings calculated?

Top reviews from the United States

Reviewed in the United States on October 2, 2018
Size: 25-CountStyle: Aquarium Water TestingVerified Purchase
61 people found this helpful
Comment Report abuse
Reviewed in the United States on May 15, 2018
Size: 25-CountStyle: Aquarium Water TestingVerified Purchase
review image
36 people found this helpful
Comment Report abuse
Reviewed in the United States on January 8, 2020
Size: 25-CountStyle: Aquarium Water TestingVerified Purchase
review imagereview imagereview imagereview image
17 people found this helpful
Comment Report abuse
Reviewed in the United States on June 4, 2016
Size: 25 - CountStyle: Aquarium Water TestingVerified Purchase
68 people found this helpful
Comment Report abuse
Reviewed in the United States on July 14, 2018
Size: 25-CountStyle: Aquarium Water TestingVerified Purchase
review image
19 people found this helpful
Comment Report abuse
Reviewed in the United States on December 6, 2019
Size: 4-CountStyle: Aquarium Water TestingVerified Purchase
review image
7 people found this helpful
Comment Report abuse
Reviewed in the United States on October 10, 2020
Size: 4-CountStyle: Aquarium Water TestingVerified Purchase
One person found this helpful
Comment Report abuse

Top reviews from other countries

debzi
5.0 out of 5 stars Perfect
Reviewed in the United Kingdom on September 19, 2019
Size: 25-CountStyle: Aquarium Water TestingVerified Purchase
review image
104 people found this helpful
Report abuse
victoria Wontner
5.0 out of 5 stars trick is to cut them straight up the miiddle and ...
Reviewed in the United Kingdom on November 16, 2016
Size: 4-CountStyle: Aquarium Water TestingVerified Purchase
122 people found this helpful
Report abuse
Dexty
1.0 out of 5 stars Faulty and bad readings
Reviewed in the United Kingdom on October 20, 2018
Size: 25 - CountStyle: Aquarium Water TestingVerified Purchase
25 people found this helpful
Report abuse
Emteq
4.0 out of 5 stars OK for a quick check all is well.
Reviewed in the United Kingdom on November 21, 2015
Size: 25-CountStyle: Aquarium Water TestingVerified Purchase
39 people found this helpful
Report abuse
jennifer
1.0 out of 5 stars Faulty
Reviewed in the United Kingdom on April 26, 2020
Size: 25 - CountStyle: Aquarium Water TestingVerified Purchase
4 people found this helpful
Report abuse