2 Pack CO2 Drop Checker Glass Aquarium Monitor Hang On CO2 Indicator Color:SilverSize: 1

Color:SilverSize: 1

Dirt can be easily removed

Package includes:20 Pcs Makeup Brushes Set

sweet cute mixed colors

2 Pack CO2 Drop Checker Glass Aquarium Monitor Hang On CO2 Indicator Color:SilverSize: 1Size: 4. 1X6. 2X1. 9cm Features: 2 pack CO2 drop checker, convenient for you to use. Made of high quality glass, non toxic, durable and safe. U shaped design, just hang it on the edge of the aquarium with no suction cup. Great for monitoring the level of CO2, such as aquarium, fish tank, aquatic plant and aquaculture. Before use to ensure the checker is clean, drop the carbon dioxide indicator (not included) into the glass CO2 monitor, and hang the