This test solution is added directly to a CO2 Drop Checker.  Over a period of a few hours the colour of the solution changes to indicate the concentration of CO2 in the water at the time; blue indicates a lack of CO2, yellow indicates too much CO2, and green indicates the desired level of CO2. Depending on the colour of the drop checker you can adjust your CO2 dose until the desired level of CO2 is reached.

The solution comes in a handy 15ml dropper bottle for easy deployment into the drop checker.

• Co2 System U-shape Connector: Light weight and compact size, which is easy to carry and store when not .
• Co2 Diffuser u Tube: Keep the aeration pipe passing through the wall of the fish tank from being squashed.
• u Tubes Co2 Diffuser: The material is safe and durable, which is wear resistance and practical for the time use.
• Aquarium Co2 Regulator: The bend water can connect the refiner and co2 well, practical and convenient.
• Carbon Dioxide Diffuser: Adopting of good and stable glass material, which is lightweight and durable, practical for a using time.

Features:

CO2 system is designed for low cost planted tank use Easily set up/low cost/excellent quality

This bottle cap is very well suitable to be DIY Co2 system’s accessory that the size fits common PET plastic bottle.

As for the another advantage of specific, we attached the great quality plastic O ring inside of the cap to prevent missing the Co2.

Easy set up, excellent design.

Description:

The composition is used as special high quality plastic for issuing great resistibility of rub, so it can be used for a long time. Easily set up/low cost/excellent quality.CO2 system is designed for low cost planted tank use.This bottle cap is very well suitable to be DIY Co2 system’s accessory that the size fits common PET plastic bottle.