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Old 01-17-2018, 11:47 PM   #35
Comodave
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City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 21,189
Even using freshwater and not enough oxygen the tank will stink. You can add chemicals, but the real solution is add air. We did the Groco Sweetank and never added any chemicals at all for 9 more years that we owned the boat without any stink.
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