Fluval - Fluval CO2 Indicator Set

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The Fluval CO2 Indicator Set is designed to monitor carbon dioxide (CO2) levels in planted aquariums, ensuring optimal conditions for live plants. It uses a color-changing solution that visually indicates whether CO2 levels are low, ideal, or high. The solution is effective for about 30 days and needs to be replaced periodically to maintain accurate readings. The indicator conveniently mounts to the aquarium glass Show more