Search  for anything...
API

API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored

    • Based on 28,933 reviews
Condition: New
Checking for product changes
$35.65 Why this price?
Save $14.83 was $50.48

Buy Now, Pay Later

As low as $8 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout. Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Monday, Nov 18
Order within 12 hours and 7 minutes
Available payment plans shown during checkout

Style: Freshwater


Features

  • Contains one (1) API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, including 7 bottles of testing solutions, 1 color card and 4 tubes with cap
  • Helps monitor water quality and prevent invisible water problems that can be harmful to fish and cause fish loss
  • Accurately monitors 5 most vital water parameters levels in freshwater aquariums: pH, high range pH, ammonia, nitrite, nitrate
  • Designed for use in freshwater aquariums only
  • Use for weekly monitoring and when water or fish problems appear

Description

Most water problems are invisible to the eye. Quickly measure and modify the six aquarium levels that are most important to the health of your freshwater fish with the API FRESHWATER MASTER TEST KIT. To stay healthy and thrive, fish need properly balanced levels of ammonia, pH, high range pH, nitrite and nitrate. These levels can change rapidly and create harmful conditions when fish waste, uneaten food or other organic matter accumulate, or when untreated water is added. If left uncorrected, all of these can be harmful or even fatal to fish, with consequences such as reduction of oxygen, increase in stress and higher risk of disease. The API FRESHWATER MASTER TEST KIT measures these six parameters with scientific accuracy and provides professional results. It comes with four test tubes, a holding tray and computer calibrated, laminated color card. Just fill the test tubes, add the test drops and compare results to the color card. Then follow the recommendations on the card if action is required. 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.

Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 9.13 x 3.5 x 4.63 inches; 1.15 Pounds


Manufacturer recommended age ‏ : ‎ 1 month and up


Item model number ‏ : ‎ 34


Department ‏ : ‎ Unisex-Adult


Date First Available ‏ : ‎ June 20, 2004


Manufacturer ‏ : ‎ Mars Fishcare


Country of Origin ‏ : ‎ USA


Best Sellers Rank: #1,368 in Pet Supplies (See Top 100 in Pet Supplies) #1 in Aquarium Test Kits


Item Weight: 1.15 pounds


Department: Unisex-Adult


Manufacturer: Mars Fishcare


Country of Origin: USA


Item model number: 34


Date First Available: June 20, 2004


Item Package Dimensions L x W x H: 6.75 x 5.25 x 4.25 inches


Item Dimensions LxWxH: 9.13 x 3.5 x 4.63 inches


Item Weight: 1.15 Pounds


Brand Name: API


Target Audience Keyword: fish


Directions: Follow the instructional booklet directions for individual testing of each water parameter, and test weekly for best results.


Warranty Description: Warranty


Model Name: API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored


Color: Multi-color


Size: Single


Material: Plastic


Number of Items: 1


Style: Freshwater


Included Components: API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Nov 18

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • API Freshwater Master Test Kit
Style: Freshwater
I think that this test kit would be a good investment for any freshwater aquarium owner. It is pretty inexpensive ($20 cheaper here than at my local pet store, and certainly more cost effective than buying test strips), seems to be accurate, and provides all the tests the average tank owner would need. The tests are easy to perform and it only takes a few minutes to complete (btw, regarding other reviewers' complaints about how long it took - if you don't have ~5 minutes to spare in your week you probably shouldn't be keeping fish). I originally bought this kit while doing a fishless cycle and was having serious questions about the accuracy of the dipstick tests I'd bought first. I felt much more comfortable with the results I got using the tube method. With the strips I had a hard time reading the results for nitrites and nitrates, it was much easier with this kit. I typically only use the nitrate test now to ensure I'm keeping up with my water changes, however I do periodically check the pH, ammonia, and nitrite just to make sure that nothing weird is going on. I'll use a medicine dropper I bought from the dollar store to fill the test tubes and perform all 4 tests at once (depending on the pH of your water, you only need to do either the normal pH or high pH, not both, so 4 tubes is sufficient). The ammonia and nitrate tests can be a little messy as water can seep around the cap, so I use cling wrap or parafilm, making sure to keep one finger over the open end just in case. It's best to read the test in a brightly lit room under white light; I check it under the fluorescent lights in the kitchen. They're all easy enough to read, and even if you can't find an EXACT match to a color on the chart, you'll get a pretty good idea of what your levels are. I do wish a hardness test was included, but for the average person it isn't really needed. It can be bought separately anyway, and given how inexpensive the master kit is here on Amazon, you'll still be paying less than if you'd bought the master kit alone at a brick and mortar store. ... show more
Reviewed in the United States on March 7, 2012 by J
    • The best freshwater basic testing kit...
Style: Freshwater
You will find this freshwater kit is far more accurate than test strips. The soaking of a tiny doped pad method of test strips just isnt an accurate way to test. This is the industry standard water test kit that most aquarists swear by. 1st, be sure the test chemicals you get are not near expiration. You should easily be able to use this kit for up to a few years before the chemicals included lose their effectiveness. The expiration date is on the kit box and on each bottle of solution. The glass test tubes that used to be included in this kit have been replaced by plastic ones. The glass tubes made cleaning up a breeze and were far better than the plastic ones that don't clean up as well. Also the 5ml fill line is a bit difficult to see on the plastic tubes. It was always inevitable though that you would eventually break a few glass tubes before you got through the 800 tests this kit can provide. They now just assume that by the time the plastic tubes get permanently stained, you'll be on to a new test kit with new tubes. While not a deal breaker, I prefered the glass tubes. Be sure you purchase the kit best suited for the tanks or ponds you keep. This kit is the freshwater version. This kit tests pH in two different ways. If you have ph generally higher than 7.4 you use the high pH test solution. If you have pH below 7.6 youll use the standard pH test kit. This is great of you are keeping multiple tanks with different pH levels or if your one tank tends to bounce around between 7.4 to 7.6. Once you figure out which test best suits your aquariums, youll likely not use the other solution. This kit tests for total ammonia using 2 solutions in one test. Ammonia is a very hazardous chemical to your fish and plants. Use this kit to keep these levels of ammonia at or near 0. This kit tests Nitrites using 1 solution. This is the second step in the nitrogen cycle. While not as harmful as ammonia, it's still something you should strive to get as close to 0 as possible. Now some people using heavily planted and fertilized tanks will actually strive to have this level low but present. This kit tests for nitrates in two solutions for 1 test. While nitrates are not as harmful to fish as Ammonia or Nitrite, most fish keepers still strive for low readings. Long term exposures to high nitrates can still cause harm to fish. Generally youll get rid of nitrates by water changes or heavy plant growth. Many people with heavily planted and fertilized tanks prefer this value to be a little higher to feed the plants but still low to protect the fish. With this test kit testing 4 of your most important chemicals in fresh water, it is a necessity to have on hand. Test strips might be more convenient but are seldom very accurate. This liquid master test kit is the standard if you want true values at an affordable price. It comes in several varieties, depending on whether you have freshwater, marine, reef or ponds. Its a great way to see what is going on in your setup before any loss of life occurs. ... show more
Reviewed in the United States on June 7, 2024 by Don Gray
    • Best aquarium water test kit
Style: Freshwater
Quality product. Accurate and easy to use.
Reviewed in the United States on August 5, 2024 by MaryAnn
    • Great product great value
Style: Freshwater
This test kit is easy to use and tests for the important parameters. It's a great value and seems like it will last a long time.
Reviewed in the United States on June 29, 2024 by Tim Escamilla
    • Size is small
Style: Freshwater
Review Image by Bella Bella
Review Image by Bella Bella
Review Image by Bella Bella
May be small, but let me tell you! These tests will save your aquarium. It's 100% more accurate than you will ever get using test strips. The tubes are sturdy plastic very durable. Test performs accurately. Color is easy to read. 0 leaks receiving mine. Only down fall on it is the size of the product, in my photos demonstrates compared side by side to a yankee candle. Other than that this product is well worth the price! Get it, don't get strips! ... show more
Reviewed in the United States on August 8, 2024 by Bella Bella
    • Great freshwater testing kit!
Style: Freshwater
I purchased this to test my the water quality of my 40 gallon freshwater fish tank. We had a few fish recently die so I was curious if the water was bad. It is so fun to play mad scientist with this kit. We learned so much about our water and have made a spreadsheet tracking everything to keep track of our water health. Our fish are much happier since! 10/10! I've had fish all my life and I wish I would have bought this sooner! ... show more
Reviewed in the United States on August 16, 2024 by Anne
    • Works great!
Style: Freshwater
This kit works great! It has very clear instructions for how to test and what to do based on the results. I'm so happy I bought it!
Reviewed in the United States on July 28, 2024 by Jodi Falk
    • Great test kit
Style: Freshwater
Easy and accurate
Reviewed in the United States on July 6, 2024 by lynne

Can't find a product?

Find it on Amazon first, then paste the link below.