- Monitor CO2 levels accurately in freshwater tanks
- Transparent acrylic material of the indicator allows correct color reading
- Special structure design allows no solution spilling from the indicator
- The waterproof color chart sticker is reusable
- Provides continuous and accurate monitoring of CO2 levels in freshwater aquariums
- Acrylic viewing window for clear color reading
- Indicator can be turned and adjusted in various positions for better viewing (Outlet of the airspace must face down)
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