Glass CO2 Drop Checker for Aquarium Planted Tank
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<b>[Product Information]</b><br>
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<li>Made of high quality glass</li>
<li>3cm diameter, unique round form, very unobtrusive</li>
<li>Use to measure CO2 levels at a glance</li>
<li>Package included: 1x glass ball drop checker, 1x suction cups</li>
<li>Please note that CO2 indicator solution is NOT included</li>
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