CO2 indicator constantly displays the CO2 level in your aquarium water.
 

Simply place the indicator in your aquarium and the color of the indicator liquid will tell you the CO2 level in the water.

This kit includes enough fluid to last for 2 years.

 NOTICE:

Fill the designated part of the Drop Checker halfway, drop by drop, with the "CO2 Test" product.

Place the drop checker in the aquarium (approximately 5cm below the water surface) so that the product does not escape into the aquarium.

The reagent will change color within 24 hours and will indicate the CO2 content of the aquarium water.

Content:

1. Green: Optimal content: 15/25 mg/L

2. Blue: Low content: less than 10 mg/L

3. Yellow: Content too high: Greater than 30mg/L