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
Aquarium Maintenance | JBL Permanent Co2+Ph Test
JBL Co2 / Ph Permanent Test Kit Set 2 for sale online | eBay
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Daily FTS - Reef and Tropical Aquarium Blog: Review: JBL CO2 Permanent Test
Daily FTS - Reef and Tropical Aquarium Blog: Review: JBL CO2 Permanent Test