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Equilibrium provides potassium, no? If it provides enough for you, then you wouldn't need to dose K2SO4.
But honestly if you're using RO water, why not just dry dose the GH booster mix which will take care of both the GH and potassium?
But honestly if you're using RO water, why not just dry dose the GH booster mix which will take care of both the GH and potassium?
