ADA CO2 Drop Checker

ADA Drop Checker – Professional CO2 Indicator for Planted Aquariums

The ADA Drop Checker is Aqua Design Amano’s original CO2 concentration monitoring glassware — a benchmark accessory for serious aquascapers. Using the principle of gas exchange, it continuously measures CO₂ saturation in aquarium water through a pH indicator solution. The color of the reagent changes according to the CO₂ concentration, allowing precise adjustment for healthy plant growth and fish safety.

When paired with a CO₂ injection system and high-output lighting such as Chihiros WRGB II or ADA’s own Solar RGB, the Drop Checker becomes an essential control tool for maintaining stable CO₂ levels in high-tech aquascapes. Its elegant, transparent glass body blends naturally into any aquascape layout, upholding ADA’s minimalist design philosophy.

Specifications

• Brand: Aqua Design Amano (ADA)
• Product Name: Drop Checker
• Material: Hand-blown clear glass
• Function: Real-time CO₂ concentration monitoring
• Indicator Method: pH reagent color reaction (Blue = Low / Green = Optimal / Yellow = High)
• Compatibility: ADA and all standard CO₂ systems
• Placement: Inside the aquarium at mid-water level for stable reading

How to Use the ADA Drop Checker

1. Fill the Drop Checker with ADA pH Indicator Solution (or equivalent CO₂ test reagent).
2. Invert and carefully place it inside the aquarium using suction or hook support.
3. Wait 1–2 hours for color equilibrium with tank water CO₂ levels.
4. Interpret the color:
   • Blue – Insufficient CO₂
   • Green – Ideal level
   • Yellow – Excess CO₂
5. Adjust your CO₂ regulator or diffuser output accordingly.

Care & Maintenance Tips

• Rinse with mild detergent and freshwater between reagent refills.
• Replace indicator solution every 2 weeks for accurate readings.
• Handle glass gently to prevent breakage.
• Position away from strong water currents for stable readings.
• Pair with ADA CO₂ Advanced System or Chihiros CO₂ Kit for precise gas control.