JBL Test CO2 / PH » MIDLAND AQUATIC SOLUTIONS IRELAND
JBL PROAQUATEST CO2-pH Permanent
JBL CO2-pH Permanent Test
JBL ProAqua Test CO2/pH Permanent
JBL PROAQUATEST CO2/pH Permanent
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