ShrimpSA Posted November 17, 2015 Report Share Posted November 17, 2015 Okay so I got a drop checker... it goes greenish to yellow then I switch off my CO2 but it never goes blue again. I also measure pH then its greenish-yellow but a day later if I measure the pH is blue again but the drop checker never changes back. It is permanently yellow, even after 3 days. I am using 4dkh fluid with pH fluid to measure the CO2 levels. It just seems like the drop checker gets stuck on yellow and never goes blue even though the CO2 levels are low. Sent from my GT-I9300 using Tapatalk Quote Link to comment Share on other sites More sharing options...
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