AquaPro CO₂ Glass Trumpet + 15ml Liquid

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About this product

The CO2 Drop Checker (often called a glass trumpet or bell) is the most reliable way to monitor the gas levels in your aquarium. It acts as a permanent visual gauge so you can see at a glance if your plants have enough fuel or if your fish are in danger. Here is the essential guide to using it, with all the technical clutter removed. The Color Guide The liquid inside the glass changes color based on the amount of gas in the water. Since there is a slight delay in the reaction, always wait about two hours after adjusting your gas before trusting the color. Blue: Not enough CO2. Your plants might grow slowly or algae might start to appear. Green: The "Sweet Spot." This is the target for a healthy, balanced planted tank. Yellow: Too much CO2. This can be dangerous for fish and shrimp. Turn the gas down immediately. How to Set It Up Fill the Bulb: Add the indicator solution into the glass piece until the rounded bulb is about half full. Mounting: Use the suction cup to stick it to the inside of your tank. Positioning: Place it on the opposite side of the tank from where your bubbles come out. This ensures you are measuring the gas that has actually dissolved into the water, rather than

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