Bromothymol Blue 100ml – pH Indicator for Aquarium Water
Bromothymol Blue is a reliable pH indicator used to test the pH balance of freshwater in aquariums. It helps monitor water conditions to ensure a safe environment for fish.
- Best suited for cold and tropical freshwater systems
- Use by rinsing a clear jar or vial with aquarium water before adding the indicator
- Add 10 drops of Bromothymol Blue to 15ml of water in a small container or vial
- Shake gently until fully mixed
- Do not touch the container’s top with fingers to avoid false readings
| pH Level | Color Change |
|---|---|
| Below 6.0 | Yellow |
| 6.0 to 7.6 | Green |
| Above 7.6 | Blue |
For gradual pH adjustments, it is recommended to test daily and add small amounts of pH Up or pH Down every second day to maintain stability and protect fish health.
FAQ
Can Bromothymol Blue be used in saltwater aquariums?
No, Bromothymol Blue is designed for freshwater use only and is not suitable for saltwater aquariums.
How often should I test the pH using this indicator?
It is recommended to test the pH daily, especially when making adjustments to water chemistry.
Does this product require refrigeration?
No, it does not require refrigeration. Store in a cool, dry place away from direct sunlight.
Evan Hughes –
I use this indicator regularly to monitor my freshwater tank’s pH. The color change is clear and easy to read. It helped me catch a sudden drop in pH early, which allowed me to adjust the water safely. Very reliable for daily checks.
Virginia Watson –
Works well for tracking pH changes. I added it to a small vial and mixed it with water from my tank. The green to blue shift is noticeable. I found it helpful during water changes to ensure stability.
Joshua Blake –
Great product for beginners. The instructions are simple and the color changes are accurate. I tested it every day and noticed small fluctuations, which helped me avoid sudden pH shifts that could harm my fish.