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API COPPER TEST KIT 90-Test Aquarium Water Test Kit

4.5 4.5 out of 5 stars 689 ratings

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Copper

Purchase options and add-ons

Brand API
Item Weight 2.4 ounces
Item Form Liquid
Target Species Fish
Allergen Information Apple Free

About this item

  • Contains one (1) API COPPER TEST KIT 90-Test Aquarium Water Test Kit, including 1 bottle of testing solution, 1 color card and 1 test tube with cap
  • Helps monitor copper and prevent invisible water problems that can be harmful to fish or treatments ineffective
  • Accurately detects copper levels from 0-4 ppm
  • Low copper level could make parasitic infections treatment ineffective
  • Use for weekly monitoring, when water or fish problems appear and when medicating

Customer ratings by feature

Easy to use
4.4 4.4
Accuracy
4.0 4.0
Easy to read
3.8 3.8

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$13.27 ($13.27/Count)
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From the manufacturer

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test

Testing the Waters

In order for fish to thrive, water must be similar to that which could be found in their natural environment. Poor water quality can cause fish stress, illness and even loss. Most common water quality parameters are Ammonia, Nitrite, Nitrate, and pH. All may vary over time and all are invisible to the eye which is why it is important to test weekly. Testing aquarium water weekly will aid in keeping your most important water parameters within the proper range for your aquarium. Choose from a wide range of API testing options, such as our popular FRESHWATER MASTER TEST KIT or 5-IN-1 TEST STRIPS, for accurate water evaluation. Regular testing will help you easily determine your aquarium conditions.

Find Your Ideal Testing Style!

Test

Test

Test

Test

Your API Test Options

Choose the test method that works best for you. Whether you’re a bit pressed for time, or you prefer to measure your parameters on a more in-depth scale, or you only need to test one or two specific parameters, API has what you need!

Dip and Read

Just dip a 5-in-1 TEST STRIP in your aquarium, swirl twice, and compare to our color chart for fast and accurate results.

The Scientific Approach

For more detailed analysis, use the FRESHWATER MASTER TEST KIT, POND MASTER TEST KIT, SALTWATER MASTER TEST KIT, or REEF MASTER TEST KIT for precise readings of parameters.

Pick One (or Two)

Need to check your phosphate levels? What about ammonia? API offers specific test kits to test many different parameters, from general hardness and copper to pH and nitrate. Grab the one you need for a streamlined approach to testing.

Test Test Test Test Test Test
API QUICK START API AMMO-LOCK API pH UP API pH DOWN API NITRA-ZORB API PHOS-ZORB
Customer Reviews
4.7 out of 5 stars
12,070
4.6 out of 5 stars
4,831
4.6 out of 5 stars
611
4.5 out of 5 stars
1,621
4.4 out of 5 stars
2,520
4.5 out of 5 stars
411
Too much nitrites?
Too much ammonia?
Inappropriate pH levels?
Too much nitrates?
Too much phosphates?
test

Making a Better Underwater World

At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world.

Looking for specific info?

Product details

  • Is Discontinued By Manufacturer ‏ : ‎ No
  • Product Dimensions ‏ : ‎ 2.75 x 1.63 x 5.13 inches; 2.4 ounces
  • Item model number ‏ : ‎ 65L
  • Department ‏ : ‎ Unisex-Adult
  • Date First Available ‏ : ‎ June 20, 2004
  • Manufacturer ‏ : ‎ Mars Fishcare
  • ASIN ‏ : ‎ B0006JDWH8
  • Customer Reviews:
    4.5 4.5 out of 5 stars 689 ratings

Product Description

Keep your fish healthy and thriving by testing your aquarium water's copper levels regularly with this easy-to-use API COPPER TEST KIT for aquariums. API COPPER TEST KIT allows for the fast, easy, and accurate measuring of copper levels in fresh and salt water, which is particularly necessary for effective parasitic treatment for diseased fish. A low copper level could make the treatment ineffective, whereas a high copper level could cause fish death. Kit reads Copper levels 0 - 4 ppm and contains 1 Copper test solution bottle, one instructional booklet, one capped test tube, and one color card.

With API aquarium products, it’s easy to keep a beautiful saltwater, freshwater or reef aquarium. For almost 60 years API has developed premium solutions with proven and effective results for your family and ours. API offers a range of testing kits, water conditioners, and nutritionally superior food, because we’re dedicated to making a better underwater world. They work to provide a safe, hospitable environment for fish such as tropical community fish, cichlids, goldfish and more. At API, we understand the rewards and relaxation of fishkeeping because we have a passion for fish too.

Important information

Directions

Copper is often used to treat parasitic infections on fresh and saltwater fish. To be effective, the copper concentration in the aquarium must be maintained at the therapeutic level for several weeks. Frequent testing is required to monitor the level. Copper should not be used in aquariums with invertebrates, including snails, shrimp, crayfish, and corals, as well as in aquariums or ponds with plants. This test kit reads the level of total copper (free and chelated) in parts per million (ppm) which are equivalent to milligrams per liter from 0 – 4.0 ppm. Chelated copper compounds are very stable and will remain in solution for long periods of time. Free copper levels will decline rapidly and must be tested daily.

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API COPPER TEST KIT 90-Test Aquarium Water Test Kit
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Price-24% $13.27
List:$17.48
$14.98$12.97-7% $14.75
Typical:$15.94
$3.59$23.91
Delivery
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Get it as soon as Tuesday, Apr 2
Customer Ratings
Easy to use
4.4
3.9
3.9
4.6
4.1
Accuracy
4.0
3.4
3.5
Value for money
3.6
4.3
3.9
Sold By
LET'S BUY
Amazon.com
Amazon.com
BEYOND YOUR HOME
Amazon.com
Monster Pets
target species
Fish
Fish
Fish
Fish
Shrimp
Fish
liquid volume
0 gallons
100 milliliters
4 fluid ounces
473.18 milliliters
form
Liquid
Liquid
Liquid
Powder
Liquid
Copper
weight
0.15 pounds
0.3 pounds
0.15 kilograms
1.44 ounces
0.3 pounds
1 pounds

Customer reviews

4.5 out of 5 stars
4.5 out of 5
689 global ratings

Customers say

Customers like the performance, copper safety, and value of the pet supplies. For example, they mention it works extremely well, is easy to read, and accurate. That said, some complain about the color and ease of use.

AI-generated from the text of customer reviews

32 customers mention24 positive8 negative

Customers like the performance of the pet supplies. For example, they say it works extremely well, is easy to read, and accurate. Some mention that the product is highly concentrated and effective. That said, most are happy with the performance.

"...are buying this to test your tap water for safe standards, it does work pretty well, but it is a color test, and it is difficult to tell and very..." Read more

"...This test kit works great." Read more

"...This test is trash and I am ordering a new one...." Read more

"Works good but not the easiest to read." Read more

24 customers mention19 positive5 negative

Customers like the copper safety of the pet supplies. They say it's a great test kit for checking copper, accurate, and reliable. Customers also say it works with Coppersafe and is a simple way to test for copper at an affordable price. They also mention that the tests are carried out with precision.

"Great test kit for checking Copper. Like the other APIs easy to use...." Read more

"...However, the snails I put in the tank are doing okay, so it seems quite accurate...." Read more

"...This test is a simple way to test for copper at an affordable price.I have run the test multiple times and have had no problems...." Read more

"...I'm glad I no longer have to take care of any aquariums! It's a great kit for testing any type of water for cooper content." Read more

17 customers mention12 positive5 negative

Customers like the value of the pet supplies. They say it's good for the price, a solid investment, and a great kit for serious aquariumists.

"A must for my shrimp tank. Great price and delivery, but the expiration date is only 10 months away (hoping to get at least 1 year)." Read more

"...Still, its good for the price." Read more

"...THIS TEST KIT DOES NOT WORK, AND IS A WASTE OF TIME AND MONEY!!" Read more

"...This test is a simple way to test for copper at an affordable price.I have run the test multiple times and have had no problems...." Read more

37 customers mention21 positive16 negative

Customers are mixed about the ease of use of the pet supplies. Some mention it's very easy to use and run, while others say it'll be difficult to read the results and determine which reading you fall into.

"Great test kit for checking Copper. Like the other APIs easy to use...." Read more

"...other API tests, but the one problem with it is that it's hard to read at lower-levels...." Read more

"...7. Calcium - ok. Results were easy to read for the most part. My red sea tests were normally about 10-15 different which isn't the end of the world." Read more

"...it does work pretty well, but it is a color test, and it is difficult to tell and very subjective as to what the reading is...." Read more

7 customers mention0 positive7 negative

Customers are dissatisfied with the color of the pet supplies. They mention that the color reading doesn't look much different, and the first color is so light beige. Some customers also mention that they didn't receive the color card with the order, making the rest useless.

"...After the final dose I retested and the color reading still doesn't look much different, definitely not close to the 2.5ppm I need...." Read more

"...The first color is so light beige, that the darkening of the test tube by simply placing it on the test card can be mistaken for it, and the..." Read more

"...The differences in color are so subtle it is difficult to have anything other than a roundabout estimate...." Read more

"Hard to read the colors. The different shades are really close." Read more

Excellent test for testing Cupramine
5 Stars
Excellent test for testing Cupramine
Initial review: After following the instructions very specifically, I was unable to get a reading of copper after I dosed Cupramine into my 10 gallon quarantine saltwater tank. However, after letting the test tube sit for a day, I was able to get a copper reading. Read below for the full review and results:EDIT: After letting the test tube sit for an entire day, I can actually distinguish a copper reading that seems to be nearly accurate with the amount of Cupramine I dosed. I tested ANOTHER sample of the same water, and got copper color immediately? Both tests look identical and it is actually reading right about 0.5mg/L. I am not sure if I should trust the readings, although they would be spot on with the amount of Cupramine I dosed. I'll test it with a Seachem test kit tommorow and update this review. Also make sure to follow the directions precisely, you need to remove the cap and look down the test tube with the white background of the color under the tube, but don't let the tube sit directly on top of the card, the color will appear much darker. Hold the test tube above the card an inch or two.EDIT #2 02/19/18: The Seachem Copper Test kit arrived and the results are in: 0.5mg/L. Right at the amount I dosed. Tested again today with also the API Copper Test kit. Results again, are the exact same. 0.5mg/L. This means (in my case) both the API Copper Test Kit and the Seachem Test Kit are both precise measuring tools if you are dosing Cupramine.
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Top reviews from the United States

Reviewed in the United States on January 20, 2024
Style: CopperVerified Purchase
Reviewed in the United States on February 17, 2018
Style: CopperVerified Purchase
Customer image
5.0 out of 5 stars Excellent test for testing Cupramine
Reviewed in the United States on February 17, 2018
Initial review: After following the instructions very specifically, I was unable to get a reading of copper after I dosed Cupramine into my 10 gallon quarantine saltwater tank. However, after letting the test tube sit for a day, I was able to get a copper reading. Read below for the full review and results:

EDIT: After letting the test tube sit for an entire day, I can actually distinguish a copper reading that seems to be nearly accurate with the amount of Cupramine I dosed. I tested ANOTHER sample of the same water, and got copper color immediately? Both tests look identical and it is actually reading right about 0.5mg/L. I am not sure if I should trust the readings, although they would be spot on with the amount of Cupramine I dosed. I'll test it with a Seachem test kit tommorow and update this review. Also make sure to follow the directions precisely, you need to remove the cap and look down the test tube with the white background of the color under the tube, but don't let the tube sit directly on top of the card, the color will appear much darker. Hold the test tube above the card an inch or two.

EDIT #2 02/19/18: The Seachem Copper Test kit arrived and the results are in: 0.5mg/L. Right at the amount I dosed. Tested again today with also the API Copper Test kit. Results again, are the exact same. 0.5mg/L. This means (in my case) both the API Copper Test Kit and the Seachem Test Kit are both precise measuring tools if you are dosing Cupramine.
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25 people found this helpful
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Reviewed in the United States on February 18, 2017
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One person found this helpful
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Reviewed in the United States on February 19, 2024
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Reviewed in the United States on March 26, 2022
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Reviewed in the United States on August 25, 2023
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Reviewed in the United States on March 13, 2023
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Top reviews from other countries

David Angel
5.0 out of 5 stars Works and accurate
Reviewed in the United Kingdom on June 11, 2019
Style: CopperVerified Purchase
Terry
5.0 out of 5 stars Recommended product.
Reviewed in India on July 9, 2018
Style: CopperVerified Purchase
Shrikanth
5.0 out of 5 stars Five Stars
Reviewed in India on July 12, 2016
Style: CopperVerified Purchase
JonnyP
5.0 out of 5 stars Does as expected.
Reviewed in the United Kingdom on January 29, 2015
Style: CopperVerified Purchase
Amazon Customer
5.0 out of 5 stars Great test kit
Reviewed in the United Kingdom on December 13, 2019
Style: CopperVerified Purchase