Glassware
Made of high-quality glass
Unique round form, very unobtrusive
Facilitates easy determination of the CO2 content
The necessary suction cup is included
£ 11.99 (incl. VAT)
- EUR: 13.94€
Overview
Globe™ CO2 Check Glass Kit is an elegant handmade glass indicator, usable without any suction cup. Hand made with high quality glass, the CO2 indicator can be cleaned easily using bleaching agent when dotted with algae. Indicator Solution is sold separately. Rinse the glass piece thoroughly before putting it back to use.
Maintaining the appropriate CO2 level is critical in a planted aquarium. Too much CO2 may harm your fish, whereas too little CO2 decreases plant growth and allows algae to take over. The CO2 indicator makes it easy to know the CO2 level inside the aquarium by comparing the color of the reagent.
Maintaining proper CO2 concentration is essential for healthy aquatic plant growth and efficient photosynthesis. Insufficient CO2 can limit plant development, while excessive levels may place unnecessary stress on fish and shrimp. Globe™ CO2 Check Glass Kit helps aquarists maintain the ideal balance by providing a simple colour-based indication of CO2 concentration within the aquarium.
The included indicator solution is formulated to provide accurate reference values independent of aquarium water chemistry, allowing reliable monitoring without interference from substances commonly found in freshwater aquariums. The premium glass chamber offers excellent clarity for easy colour interpretation. Suitable for both beginner and advanced aquascapers, Globe™ CO2 Check Glass Kit delivers continuous monitoring without requiring electronic equipment or complex calibration procedures.
Directions
Fill the glass drop checker with approximately 1–2 mL of the supplied CO2 indicator solution. Carefully position the checker inside the aquarium using the glass holder in an area with moderate water circulation, away from direct CO2 diffuser output.
Allow approximately 1–2 hours for the indicator solution to equilibrate with the aquarium water. Once stabilized, observe the colour of the solution and adjust CO2 injection accordingly.
- Blue — insufficient CO2 concentration for optimal plant growth
- Green — optimal CO2 concentration suitable for most planted aquariums
- Yellow — elevated CO2 levels that may become stressful or harmful to fish and shrimp if maintained for extended periods
For the most consistent results, monitor the checker daily and make gradual adjustments to CO2 injection rather than large corrections. When refilling the indicator solution, use a precision dropper bottle to ensure accurate and repeatable dosing.
Technical Specifications
FAQ
How long does it take for the checker to respond to CO2 changes?
The indicator solution typically requires 1–2 hours to fully reflect changes in aquarium CO2 concentration.
What colour indicates the correct CO2 level?
Green indicates the optimal CO2 range for most planted aquariums and provides an excellent balance between plant growth and livestock safety.
Why is the solution still blue after increasing CO2 injection?
The drop checker reacts gradually and may require additional time before showing the new CO2 level. Verify that the CO2 system is functioning correctly and allow sufficient stabilization time.
Can water chemistry affect the reading?
No. The supplied indicator solution is designed to measure CO2 independently of aquarium water parameters, helping provide more reliable results.
Is the checker suitable for shrimp aquariums?
Yes. The Globe™ CO2 Check Glass Kit is suitable for aquariums containing shrimp, fish, and aquatic plants. Proper monitoring helps prevent excessive CO2 concentrations that may stress sensitive species.
How often should the indicator solution be replaced?
For best performance and colour accuracy, replace the indicator solution every 4–6 weeks or whenever contamination is suspected.
Safety
Beware of glass breakage. For aquarium use only. Keep out of reach of children and pets. This product may stain skin, clothing, silicone seals, decorations, and porous materials. Avoid contact with fabrics and household surfaces.
Wash hands thoroughly after use. Avoid contact with eyes and mouth. In case of accidental contact, rinse thoroughly with clean water. Do not overdose. Store tightly closed in a cool, dry place away from direct sunlight.
Not intended for human consumption or veterinary use outside ornamental aquatic animals.