The drop checker is a glass pH monitor that comes with a pH-sensitive indicator solution. When submerged in water, this indicator solution changes color according to changes in the pH of the aquarium as a result of the presence and concentration of CO2. The pH checker makes monitoring CO2 concentrations and pH level in planted aquaria easy.
This item may need to be ordered in for you. If this is the case, please allow one week for dispatch. Please contact us to confirm the on hand availability if required.