Bullet Points:
Safe and Accurate CO2 Checker: This product is made of high-quality thick glass material that has high transparency and durability. Because of its quality, it can withstand high pressure and temperature variations. This ensures a safe and accurate CO2 measurement for your fish tank.
Wide Application: This fish tank CO2 checker is suitable for all kinds of fish tanks, especially ornamental fish tanks with aquatic plants and tropical fish.
Monitor CO2 Levels: With this CO2 indicator, you can check the carbon dioxide concentration in your fish tank with regular checks. It helps you achieve optimal plant and fish health by being a compact and easy-to-read device.
Quick and Simple: This aquarium CO2 tester has a mixed carbon dioxide drop checker solution that you can use directly. No need to mix water and solution yourself, which makes it quick and simple. Fill the checker and place it in your tank.
Color Changes: This CO2 Drop Checker uses an indicator solution that changes color according to the CO2 level in your fish tank. Yellow means too much CO2, blue means not enough, and green means just right.
Description:
If you have a planted fish tank, you know how important it is to maintain the right CO2 levels for your plants and fish. Too much or too little CO2 can affect the health and growth of your aquatic life.
You don't need to worry about the ratio of water to the solution, as the solution will change colors with the increasing concentration of dissolved CO2.
The kit is safe for fish tanks, as it does not harm the eggs or fry. The kit is easy to install and use, and it comes with a clear instruction manual.

Specification:
Name: Fish Tank CO2 Glass Monitor
Condition: 100% brand new, high-quality
Detector product material: glass

Ease of use: Make sure your test suite is clean. Put 5 drops of CO2 indicator into the glass drop checker and make sure to store it on the ball side of the with the opening facing down. Place the suction cup (included) on the droplet and attach the CO2 droplet checker to the side of the tank, submerging it completely in the tank water. Wait 2 hours for the CO2 level to be read.

Product List:
Detection solution*1
Detector*1
Suction cup*1

Notes:
1. Due to the different monitor and light effects, the actual color of the item might be slightly different from the color which is showed in the pictures.
2. Please forgive a slight measuring deviation due to manual measurement.