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JBL Permanent CO2 plus pH Test Set 2 Checker for Aquariums CO2 Drop Checker - AliExpress Home & Garden
![Why is my co2 drop checker constantly blue? I am using the JBL Permanent Co2 plus pH Aquatest. The instructions indicate that you add 35 drops of the provided tester liquid into Why is my co2 drop checker constantly blue? I am using the JBL Permanent Co2 plus pH Aquatest. The instructions indicate that you add 35 drops of the provided tester liquid into](https://preview.redd.it/jcl1ljk11es61.jpg?width=640&crop=smart&auto=webp&s=19fdefd25e3b68379732e9f6838c81d30e48853c)
Why is my co2 drop checker constantly blue? I am using the JBL Permanent Co2 plus pH Aquatest. The instructions indicate that you add 35 drops of the provided tester liquid into
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JBL water test agent kit PH NO2 NO3 Ca Mg Cu O2 CO2 PO4 NH4 GH KH Fe aquarium fresh maring water fish tank - AliExpress Home & Garden
![JBL Permanent CO2 plus pH Test Set 2 Checker for Aquariums CO2 Drop Checker - AliExpress Home & Garden JBL Permanent CO2 plus pH Test Set 2 Checker for Aquariums CO2 Drop Checker - AliExpress Home & Garden](https://ae01.alicdn.com/kf/HLB1R86vXznuK1RkSmFPq6AuzFXav/JBL-Permanent-CO2-plus-pH-Test-Set-2-Checker-for-Aquariums-CO2-Drop-Checker.jpg)