Aquarium CO2 Tester, 2 Aquarium CO2 Monitors, Clear Glass CO2 Tester with Suction Cup

Essential Aquarium Accessories: Maintaining proper CO2 levels in your aquarium is one of the most important factors for the health of your planted aquarium ecosystem. Using an aquarium CO2 tester, you can easily check your aquarium's CO2 levels at any time. Help your fish and plants grow healthier.
High-Quality Material: The aquarium CO2 tester is made of non-toxic, safe, and durable clear glass. The transparent color helps you more clearly observe changes in water color and understand the carbon dioxide content.

Powerful Suction Cup Design: The aquarium CO2 tester features a suction cup design. It is easy to install and remove. Simply install the product on the inside wall of the aquarium, 5-10 cm from the horizontal plane, and it can be used for a long time.

EASY TO CHECK CO2 LEVELS: The glass drop tester is very easy to use. You can determine the CO2 content simply by observing the color of the liquid. Green means the CO2 level is correct, blue means there is not enough CO2, and yellow means there is too much CO2.

Convenient and Simple: The package includes 2 glass CO2 testers, lightweight and convenient to use for professional aquarium enthusiasts or beginners in fishkeeping.
Please allow for a 1-3 cm margin of error due to manual measurement. Thank you for your understanding.
Due to different monitor calibrations, the color of the item shown in the photo may vary slightly from the actual item. Please refer to the actual product.