[ISTA] CO2 Indicator

The Simple and Safe Method of CO2 Indication.

• Monitor CO2 level accurately in fresh water tank.
• Transparent acrylic material of indicator allows correct color reading.
• Special structure design allows no chance of solution spilling out from the indicator.
• Water-proof color chart sticker is reusable.

How to Use

• Take apart the "airspace cap"
• Add 1cc of indicator solution to the reservoir then reattach the "airspace cap" firmly to the indicator.
• Keep the outlet of the airspace facing down, submerse the CO2 indicator and attach to the desired location in the tank.
• Place the color chart sticker over the suction cup position of the CO2 indicator on the outside of the tank.
• Compare the color of solution to the color chart sticker to read the CO2 level in your tank.
• Change solution evey 2 weeks or after every water change..