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Jbl Jbl Proflora U502 - Sistema di fertilizzazione al co2 per piante in acquariofilia : Amazon.it: Prodotti per animali domestici
![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?auto=webp&s=a1d5d0955924f9c60e7907d44c901c308c03aacb)
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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