The CO₂ Drop Checker Glass Solution (Combo Pack) is an essential monitoring tool for planted aquarium setups using pressurized CO₂ systems. This combo includes a high-quality glass drop checker and a pre-mixed indicator solution, allowing aquarists to visually track CO₂ concentration inside the aquarium. The drop checker changes color based on CO₂ levels—blue (low CO₂), green (optimal), and yellow (excess CO₂)—making it easy to adjust CO₂ injection for optimal plant growth while keeping fish safe. Crafted from transparent glass, the drop checker blends seamlessly into aquascapes without distracting from the layout. This combo pack offers a simple, reliable, and beginner-friendly way to maintain stable CO₂ levels in any planted freshwater aquarium. Key Features & Benefits Accurate visual CO₂ level monitoring Color-changing indicator solution High-quality transparent glass drop checker Easy to read and maintain Improves plant health and CO₂ efficiency Helps prevent fish stress due to excess CO₂ Product Specifications Product Type: CO₂ Monitoring Tool Included: Glass drop checker Indicator solution Material: Glass Indicator Colors: Blue / Green / Yellow Aquarium Type: Freshwater planted aquariums CO₂ System: Pressurized CO₂ Recommended For Planted and aquascaped aquariums CO₂-injected tanks Beginner and advanced aquarists Nano to large aquariums Aquascaping enthusiasts Usage & Maintenance Notes Fill drop checker with provided solution Place inside aquarium below water surface Allow 1–2 hours for accurate color reading Aim for green color during lights-on period Rinse glass periodically to remove algae
