Regular Size Glass CO2 Drop Checker

• Glass piece and suction cup only.
• Regular size: 5.5cm height, 6cm width.
• Perfect for all sizes of aquarium.

Nano Size Glass CO2 Drop Checker

• Glass piece and suction cup only.
• Nano size: 4.5cm height, 5cm width.
• Perfect for small or nano sized aquariums.

U-Shape Glass CO2 Drop Checker

• Glass piece only.
• U-Shape to hang over aquarium glass.
• For 8mm glass maximum.
• Perfect for any size aquarium.
• 5.75cm height, 4cm width.
• Aquarium must have open rim.

This glass CO2 drop checker is used to monitor the CO2 dosing in your aquarium. Simply fill with CO2 indicator solution and the solution will change colour to indicate the level of CO2 in the aquarium water. Please note; this listing is for the glass piece / suction cup only. The full kits, including indicator solution, can also be found on the website.