Chihiros Glass Co2 Indicator

Introduction

The Chihiros Glass CO₂ Indicator is a high-quality glass drop-checker designed to monitor CO₂ levels in planted aquariums. By using a CO₂ indicator solution, it provides a clear, visual color-based readout — helping you maintain optimal CO₂ levels for healthy plant growth while keeping fish and shrimp safe. Compact and easy to install, it’s perfect for both standard and nano aquariums.

Key Features

• Reliable CO₂ Monitoring – Visual color-change system: Blue (low), Green (optimal), Yellow (high).

• High-Quality Glass Construction – Durable, aquarium-safe, and crystal clear for easy viewing.

• Easy to Install – Comes with a suction cup for secure placement on aquarium glass.

• Compact Design – Minimal disruption to tank layout, suitable for planted and nano tanks.

• Continuous Monitoring – Provides constant CO₂ level feedback without frequent chemical testing.

Specifications

• Material: High-quality glass

• Includes: Glass drop-checker + suction cup (CO₂ indicator solution sold separately)

• Function: CO₂ concentration indicator using indicator solution

• Tank Compatibility: Freshwater and planted aquariums

Available Sizes

• Regular

• Tiny

Usage Guidelines

• Fill the glass bulb halfway with CO₂ indicator solution.

• Place the indicator vertically inside the tank using the suction cup.

• Allow a few hours for the solution to equilibrate with tank water.

• Read color: Blue = low CO₂, Green = optimal, Yellow = high CO₂.

• Avoid placing directly above CO₂ diffuser outlets to prevent skewed readings.

• Refresh the indicator solution regularly for accurate monitoring.

Recommendations

• Ideal for planted aquariums with CO₂ injection to maintain optimal plant growth.

• Perfect for nano tanks or small aquariums due to the tiny size option.

• Useful for new aquarists seeking easy visual CO₂ monitoring.

• Helps balance CO₂ for plants while avoiding harm to fish or shrimp.

• Compatible with both freshwater and planted-tank systems using CO₂ supplementation.