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Discussion Starter · #21 ·
It's possible that increasing the dosage could help, but you may want to research the Metricide 28 vs 14 before you do any additional dosing. I don't have personal experience with the 28, but it's been cautioned against using in our tanks because of the added surfactants.
Which glutaraldehyde are you using?
 

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Discussion Starter · #22 ·
And update, after testing the tank water about 24 hours (after taking some sample for degassing) I got 7.8pH and my tank at the middle of the CO2 dosing is about 6.6pH so should I add more CO2 or should I use RO DI water instead of tap water?
 
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