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Your cart is empty.Replacement Test Tubes compatible with the Aquarium Pharmaceuticals (API) Test Kits. 3 Pack.
Richard
September 5, 2025
It’s the perfect replacement for api glass tubes very nice !
Patrick Shi
August 30, 2025
Exactly the same quality as the test tubes in the API water testing kit. Great quality, would buy again.
J. C.
August 28, 2025
They arrived unbroken.
J
August 24, 2025
I broke mine and needed to test my aquarium water after adding a new fish. These came very quick and at a good price!
Customer
June 23, 2025
Perfect API test kit replacement test tubes after I accidentally broke four from my Master test kit
Tasha Figueroa
June 13, 2025
I was expecting the original glass ones but received plastic tubes. They look fake. They work but it’s not what I expected.
Jessica Derk
June 11, 2025
Received all 3 in bubble wrap, none were damaged. I broke the first one I got with the kit, and scrambled to buy more I didn't expect them to all come in prefect condition. but they did I am very happy and will purchase this again.
muttitat
June 7, 2025
They were a perfect replacement for the test tube we broke from our aquarium test kit
ShadowTech
May 21, 2025
Won't let me replace it, do not buy
Collette demaine
May 11, 2025
Quick delivery highly recommend
Vinnie Nakrani
March 11, 2025
Products better than expected. The bottles I received actually have the 5ml measurement line, which can not be seen on the picture.
Glenn Walsh
February 13, 2025
same as the test kit tubes
mike adkins
February 9, 2025
after standing on my originals these came as a godsend
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