API pH Test & Adjuster Kit
The pH TEST & ADJUSTER KIT is a complete solution for measuring and adjusting aquarium water pH to desired levels. Fish and plants require a specific pH range to thrive, but pH can fluctuate due to fish waste, tap water addition, and natural acid buildup.
- Includes 1 x bottle of pH Up
- Includes 1 x bottle of pH Down
- Includes 1 x laminated color-calibrated card
- Includes 1 x glass test tube with snap-tight cap
- Provides step-by-step instructions for use and guidance on correcting unsafe pH conditions
| Component | Quantity |
|---|---|
| pH Up solution | 1 bottle |
| pH Down solution | 1 bottle |
| Color calibration card | 1 laminated card |
| Test tube | 1 with snap-tight cap |
| Instructions | Step-by-step guide |
FAQ
How accurate is the color card for pH measurement?
The color card is calibrated to provide accurate pH readings when used with the test tube and following the provided instructions.
Can this kit adjust pH in real-time?
The kit allows for measurement and gradual adjustment of pH levels. It does not provide real-time monitoring or automatic adjustment.
Is the test tube reusable?
The test tube is designed for single use. It should be cleaned and dried after each test, but is not intended for repeated use without proper cleaning.

Jake Jones –
Easy to use and very reliable. I used it to stabilize my tank’s pH after a water change. The color card is clear and the instructions are straightforward. My fish have stayed healthy since I started using it regularly.
Tracey Dickens –
Good for basic pH checks. The pH Up and Down solutions work well, and the test tube is clean and easy to handle. I found it helpful during seasonal changes when pH levels were unstable.
Keith Harris –
This kit has made a big difference in my planted tank. I can now maintain a stable pH without frequent water changes. The color card is precise and the instructions are clear for beginners.