Description

Easily monitor your aquarium's CO₂ levels with this CO₂ Indicator Drop Checker. Designed for precision and ease of use, this glass monitor uses a special indicator fluid to visually show CO₂ concentration through color changes—blue (low), green (optimal), and yellow (high). Ideal for planted tanks, it helps maintain healthy CO₂ levels for aquatic plant growth. Simply attach it inside the aquarium with the included suction cup and observe the color for real-time CO₂ monitoring.