API 5-in-1 Test Strips – 100 Strips
Keep your aquarium safe and thriving with API 5-in-1 Test Strips, the fast and simple way to monitor the five essential water parameters: pH, KH, GH, nitrate, and nitrite. With just one dip, you can test all five parameters at once, helping you detect hidden water issues before they harm your fish.
Each strip comes with an easy-to-read colour chart and clear instructions, so you can quickly interpret your results and take action to maintain optimal water conditions. Protect your aquatic life and enjoy a healthier, cleaner aquarium effortlessly.
Key Features
- Tests pH, KH, GH, nitrate, and nitrite in a single step
- Quick, easy, and accurate water testing
- Helps prevent harmful water problems before they affect fish
| Parameter | Test Method |
|---|---|
| pH | One-time dip, color comparison |
| KH (Carbonate Hardness) | One-time dip, color comparison |
| GH (General Hardness) | One-time dip, color comparison |
| Nitrate | One-time dip, color comparison |
| Nitrite | One-time dip, color comparison |
FAQ
How long does it take to get results after dipping the test strip?
Results are typically visible within 30 seconds after dipping the strip in the water sample.
Can these test strips be used for both freshwater and saltwater aquariums?
These strips are designed for freshwater aquariums. They are not recommended for saltwater environments.
Are the test results accurate for all types of water conditions?
The strips provide reliable results under standard aquarium conditions. For highly variable or extreme water chemistry, results may vary and should be confirmed with professional testing tools.

Penelope Gill –
I’ve used these strips for three months now and they’re very reliable. The color chart is easy to read and I can check all five parameters in just one dip. My fish have stayed healthy, and I no longer feel overwhelmed by water testing.
Olivia Skinner –
The strips work well for routine checks. I appreciate the simplicity and speed. One thing I noticed is that the nitrite test is a bit less sensitive than I expected, but overall it’s a solid tool for basic monitoring.
Carol Quinn –
Great value for the price. I bought a pack of 100 strips and have used them weekly. The instructions are clear and the results match what I see in my tank. No confusion or delays in reading the results.
Emily Parsons –
They’re okay, but not as precise as the lab test kits I used before. I still rely on them for quick checks, but I do double-check with a digital tester occasionally.