API Marine Saltwater Master Test Aquarium Kit

Rated 3.5 out of 5 stars
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API Marine Saltwater Master Test Aquarium Kit slide 1 of 7
Slide 1 of 7
API Marine Saltwater Master Test Aquarium Kit slide 1 of 7
$29.99Chewy Price
$55.09Chewy Price
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Frequently Bought Together

This Item - API Saltwater Aquarium Master Test Kit, 550 count
Rated 4.5 out of 5 stars
$19.92Chewy Price
Total Price: $0.00

About This Item

  • Marine aquarium starter kit includes test kits that measure ammonia, pH, nitrate, and nitrite, plus marine fish food.
  • Helps keep saltwater aquariums healthy and thriving by letting you quickly pinpoint unsafe water parameters.
  • Includes liquid test reagent, glass test tubes with snap-tight caps, a holding tray and a step-by-step instruction booklet.
  • Comes with high-protein, minimum-waste fish food that provides a complete diet for clownfish, wrasses, damsels, tangs and other marine fish.
  • Saves time and money by combining many aquarium solutions into one, from an industry leader in aquarium care.
Play Video: Learn More About API From Our Team of Experts
Learn More About API From Our Team of Experts

Related Items

The products in this kit are also available individually, for replacement as needed:

Help lower your aquarium's pH level with API's pH Down or raise it with API's pH Up water treatment.

About API Testing

Testing the Waters

For fish to thrive, their aquarium water must be similar to the water in their natural environment. Poor water quality can cause stress, illness and even the loss of your fish. Important water quality parameters include ammonia, nitrite, nitrate, and pH. These can vary over time, and they are invisible to the eye, which is why it is necessary to test weekly. Choose from a wide range of API testing options like the Freshwater Master Test Kit or 5-in-1 Test Strips to accurately evaluate your water.

Pressed for Time? Just Dip and Read

Simply dip an API test strip into your aquarium, swirl it twice, and then use the color-coded chart to determine if your water is within safe parameters or if adjustments are needed. That’s it! API test strips are available in a 5-in-1 version, which includes testing for pH, nitrite, nitrate, carbonate, and general hardness. Ammonia and pH test strips are also available so you can mix and match according to your needs.

The Scientific Approach

Get professional results from the comfort of your home with API test kits. Measure up to six parameters with API Master Test Kits, or pick and choose from a wide variety of individual test kits. Both types of kits come with test tubes and a laminated, calibrated color card. API test kits allow for numerous tests, making them an inexpensive way to help keep your aquarium water quality in check.

How to Correct Aquarium Water Parameters

Too Much Ammonia?

Ammonia is released into the water through gills, urine, uneaten food and more. API Ammo-Lock detoxifies it instantly.

Inappropriate pH Levels?

Fish require a specific pH level to thrive. Use API pH Down to lower freshwater aquarium water pH to the right level.

Too Much Nitrite?

Use API Quick Start to quickly consume nitrite and help maintain an active biological filter.

Nitrates Too High?

API Nitra-Zorb helps remove nitrate and other toxins that can be harmful to fish and lead to algae growth.

About API

The team at API has a passion for fish and understands the rewards and relaxation fishkeeping can bring. For almost 60 years, they have developed premium products with a focus on proven and effective results. API offers a range of testing kits, water conditioners and nutritionally superior fish foods. They are dedicated to making a better underwater world for the benefit of fish and those who keep them.

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Fish TypeMarine Fish, Marine InvertebrateMarine Fish, Marine InvertebrateMarine Fish, Marine InvertebrateMarine Fish, Marine InvertebrateMarine Fish, Tropical Freshwater, Marine Invertebrate...
Aquarium TypeSaltwaterSaltwaterSaltwaterSaltwaterSaltwater

Questions & Answers

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ReviewsWrite a Review

Rated 3.5 out of 5 stars
2 Reviews
Would recommend to a friend

2 Customer Reviews

Rated 5 out of 5 stars
By ChefJoser on Jan 6, 2019


I had being using these products almost 1 year in half without getting a replacement or paying for a another one from chewy.com. This product is very accurate with level of the aquarium. The person that rate this API MARINE KIT product 2 star doesn't know how to use this product properly. I will recommend this product because next text kit very expensive and that redsea products..

Rated 2 out of 5 stars
By Naya on Apr 20, 2018

Not accurate

This test kit is never accurate, for fresh or saltwater. It's not just the one I got either. I bought a second one from my lfs and it was still inaccurate.