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You seem to be adding a lot of potassium with no water replacement. This is a problem.
Unlike NO3- and PO4-3; K+ is not chemically converted to other compounds and does not go away. It is always present either in the plants, animals or water.
My estimate is that you are adding 1.0ppm per day. If you add 1ppm per day over a year with no water replacement, your tank will be at 365 ppm!
Has anyone ever tested their water for K after a year on this system.
Unlike NO3- and PO4-3; K+ is not chemically converted to other compounds and does not go away. It is always present either in the plants, animals or water.
My estimate is that you are adding 1.0ppm per day. If you add 1ppm per day over a year with no water replacement, your tank will be at 365 ppm!
Has anyone ever tested their water for K after a year on this system.