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API FRESHWATER MASTER TEST KIT 800-Test Freshwater Aquarium Water Master Test Kit, White, Single, Multi-colored
Inhouse product
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Customer Image, click to open customer review
Customer Image, click to open customer review
Customer Image, click to open customer review
Customer Image, click to open customer review
Customer Image, click to open customer review
Customer Image, click to open customer review
Reviews & Ratings
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H. Lincoln
08-08-2025This test kit has been a game changer for my freshwater tank. It includes everything I need to monitor ammonia, nitrite, nitrate, and pH levels. The instructions are clear and the color chart is easy to read, even for beginners. It works well and will keep your fish safe for any size tank :)I test weekly, and this kit has helped me stay ahead of any water quality issues. It’s lasted a long time and the case keeps everything organized. If you’re serious about fishkeeping, this kit is an absolute must. Although it can get pricey, it’s extremely worth the value!
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Christopher Lang
08-08-2025I've been keeping fish for a long time now but I'm ashamed to say I never owned a water test kit until recently. I could never bring myself to pay the $40 that the big-name pet store wanted for the test kit. I just blindly assumed my water was good as long as my fish were swimming. When I decided to "reboot" my 55 gallon aquarium with new lighting, plants and a canister filter I decided I better invest in a water test kit. I was surprised to see that Amazon sells this kit for less than HALF of what I would have paid at the chain pet store.The instructions are very clear and even if you lose them, all of the test chemicals have simple instructions printed on the bottles. There's plenty of reagents in the kit to do hundreds of tests, so it should feasibly last years. There's a laminated card included to help you measure your test results. I'm glad that it's been laminated so water won't ruin it, because it will definitely get wet. The box holds all your reagents, four test tubes (for the 4 tests it does so you can do them all at once) and the color chart all nicely inside it.This is a really handy little kit that I will get plenty of use out of. It's always better to be proactive with your aquarium rather than reactive and this kit will definitely help you identify problems before they become emergencies. Read up about what each of the test results mean and how to interpret them. The short and simple is: pH should be roughly neutral (7) unless you are keeping fish that require more specific pH requirements. Ammonia and nitrites are what can kill fish and those should always be kept at 0 or barely above. Anything more than 0.25ppm needs immediate action (water changes, filter maintenance). Nitrates are the final product in your nitrogen cycle and there's a lot of debate about what is acceptable. Ideally it would be 0, but most commonly I see anything below 40ppm being acceptable. Nitrates are absorbed by plants so if your setup is planted you likely won't need to worry much about nitrate levels as your plants will absorb as much as they can.
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Natalie
08-08-2025This is the best, most recommended water testing kit for aquariums. Every time I've talked with others who keep tanks, they always ask which test kit I use and happily agree this is the one to go with. It is a bit expensive if you're just getting started but worth it, last a long time, is easy to use once you read the instructions, and has everything you need. It's helpful to watch videos on water tests/changes if you're just getting started and want to learn more before making the purchase. I recommend this kit!
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
