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🧬 Dive into perfect water clarity—because your fish deserve the best!
API 5in1 Test Strips provide a quick, reliable way to monitor the five critical water parameters—pH, KH, GH, Nitrate, and Nitrite—in both freshwater and saltwater aquariums. With 25 easy-to-use strips per pack, this kit empowers aquarium enthusiasts to maintain a healthy aquatic environment, preventing invisible water issues that stress or harm fish. Trusted by millions and backed by nearly six decades of API’s expertise, these strips deliver fast, accurate results to keep your underwater world thriving.

| ASIN | B000HHOAIY |
| Best Sellers Rank | #4,538 in Pet Supplies ( See Top 100 in Pet Supplies ) #18 in Aquarium Water Quality Testing & Treatment |
| Brand | API |
| Brand Name | API |
| Customer Reviews | 4.5 out of 5 stars 10,523 Reviews |
| Global Trade Identification Number | 00317163070338 |
| Item Type Name | Aquarium Test Kit |
| Item Weight | 0.1 Pounds |
| Manufacturer | API |
| Material Type | plastic |
| Model Number | 33G |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 33G |
| Recommended Uses For Product | pH, ammonium, nitrite, nitrate, hardness |
| Recommended uses for product | pH, ammonium, nitrite, nitrate, hardness |
| Sterility Rating | 6.0-8.0 |
| UPC | 317163070338 |
| Unit Count | 1 Count |
| Unit count | 1 Count |
| pH range | 6.0-8.0 |
P**T
Easy to use.
Test strips are very easy to use. Fast delivery. Great customer service.
A**L
سيئ
لا ينفع يسبب جفاف
M**A
Seem to ve accurate no problems with my tank
The test strips seem to work really well and are easy to use. My fish and shrimp are all doing brilliantly, so that gives me confidence that the readings are accurate and my water parameters are where they need to be. They're really handy for keeping an eye on the tank and checking everything is staying balanced without having to mess around with complicated testing. Great little strips and good value for money. Really pleased with them.
T**S
Verwende es für Meerwasser
Ich habe etwas länger gesucht und bin dann doch fündig geworden. Ein Schnelltest der auch für Meerwasser geeignet ist. Gleich vorweg, dieser Test ersetzt nicht die aufwendigeren und umfangreicheren anderen Tests. Dies ist nur um mal kurz und schnell die wichtigsten Parameter zu checken.
A**H
Expensive
Very good
A**A
EXCELENTE
Kit para medir los mas importantes elementos de una pecera de agua dulce , me llego justo el de la foto lo utilice y estuvo super bien , a demas de que esta en un muy buen precio y llego rápido.
K**L
Not good
I do not recommend the scales are strange, there is no reference to what parameters are correct and what are not
Trustpilot
1 day ago
2 weeks ago