Seachem CO2 Indicator Solution – 50 ml
CO2 Indicator Solution is for use with the Seachem Glass pH Checker. Indicator solution changes colour according to changes in the pH of the aquarium. This is an easy and effective way to check for CO2.
Directions for Replacing the CO2 Indicator Solution: Holding the funnel side of pH Checker upward, fill the small bulb with 20 drops of indicator solution. Slowly turn the funnel side down avoiding any spillage of the solution. Insert pH Checker into aquarium funnel side down, trapping air in the funnel. Attach the pH Checker in aquarium at the furthest point from any diffuser. The colour of the indicator solution will change yellow to green to blue according to the pH of the water. A yellow color indicates lower pH/more CO2. A blue color indicates higher pH/less CO2.
| Color | CO2 Level |
|---|---|
| Yellow | Lower pH / More CO2 |
| Green | Moderate pH / Moderate CO2 |
| Blue | Higher pH / Less CO2 |
FAQ
How often should I replace the CO2 Indicator Solution?
The indicator solution should be replaced when the color change becomes less noticeable or when the solution appears cloudy. Typically, it lasts several months depending on aquarium conditions.
Can I use this indicator solution with other pH checkers?
This solution is specifically designed for use with the Seachem Glass pH Checker. It may not work properly with other pH checker models.
What does the color change mean in terms of CO2 levels?
A yellow color indicates lower pH and higher CO2 levels. A green color indicates moderate pH and CO2. A blue color indicates higher pH and lower CO2 levels.
Thomas Peters –
This indicator solution works very reliably. I noticed the color shift from yellow to blue over a few weeks as I adjusted my CO2 dosing. It’s easy to use and helps me maintain stable pH levels in my aquarium.
Piers Edmunds –
I’ve used it for about three months now and it still shows clear color changes. The instructions are straightforward and the solution stays fresh without any issues.
Ruth Carr –
Great tool for monitoring CO2 levels. The color transition is obvious and helps me avoid over-dosing. I keep it in a visible spot and check it daily during setup phases.