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>What do you consider the ideal kh for a planted tank? What is the
I f you want to inject supplemental CO2 3 is about as low as it is safe to
go. You can go a little lower without supplemental CO2, but some hardwater
plants won't do as well in water this soft. If you are injecting CO2,
anything between 3-8 is _easily_ handled. Above 8, I'd still try not to
monkey with the water unless the plants proved that I really needed to.