Premium Glass CO2 Drop Checker & Indicator Reagent Set (15ml)

Take the guesswork out of CO2 injection with the Premium Glass CO2 Indicator Set, available now at www.onyxaqua.com. Balancing carbon dioxide in a planted aquarium is a delicate dance—too little, and your aquatic plants starve; too much, and your fish and shrimp can suffocate.

This elegant, spherical glass drop checker, paired with our specialized 15ml indicator reagent, provides a continuous, highly accurate visual reading of your tank's CO2 levels at a simple glance. It is an absolute essential for any high-tech planted aquascape.

Key Features & Benefits

• Accurate Color-Coded Readings: The included reagent changes color based on the concentration of dissolved CO2 in your water, providing a foolproof visual guide to your tank's safety and plant health.

• Ready-to-Use Reagent: The 15ml bottle contains a pre-mixed indicator solution. It is specially formulated for aquarium use to provide crisp, distinct color transitions without the need for complicated mixing.

• Elegant Glass Design: Crafted from high-quality, crystal-clear glass, the bulb-shaped drop checker maintains a minimalist, unobtrusive profile that won't detract from your aquascape.

• Complete Monitoring Kit: This set includes everything you need to start monitoring immediately: the glass drop checker, a secure clear suction cup, and the 15ml reagent bottle.

• Prevents Disasters: By offering real-time visual feedback, you can safely dial in your CO2 regulator to maximize plant growth while ensuring your livestock has plenty of oxygen.

Technical Specifications

How to Read Your Drop Checker

The reagent acts as a pH indicator that reacts to the CO2 off-gassing from your aquarium water into the glass bulb.

The Color Guide:

• BLUE (Low CO2): Your CO2 levels are too low. Your plants may not be getting enough carbon to photosynthesize effectively. Action: Slowly increase your CO2 injection rate.

• GREEN (Optimal CO2): Perfect! You have achieved the ideal balance of roughly 30 ppm of dissolved CO2. Action: Keep your injection rate exactly where it is.

• YELLOW (High CO2 / Danger): Your CO2 levels are dangerously high and could rapidly suffocate your fish and shrimp. Action: Immediately decrease your CO2 injection and increase surface agitation to add oxygen.

Installation & Maintenance Guide

1. Fill the Bulb: Turn the glass drop checker upside down. Carefully squeeze 10 to 15 drops of the indicator reagent into the bulb.

2. Trap the Fluid: Slowly rotate the drop checker completely upright. The fluid should become trapped in the round bulb reservoir without spilling out the bottom opening.

3. Install in Tank: Press the suction cup firmly against the inside glass of your aquarium, positioning the drop checker a few inches below the water's surface. Ensure the open bottom is facing straight down.

4. Wait for Results: The color change is not instantaneous. Allow 2 to 4 hours for the reagent to fully react with the tank water and display an accurate color reading.

5. Routine Maintenance: Replace the reagent fluid every 3 to 4 weeks, or whenever the color begins to look faded or cloudy, to ensure continued accuracy.