Alkalinity needs to be low for sparging use. . . There isnt a specific pH target for sparging water since the starting alkalinity of the tap water makes the difference in how low the pH has to be pushed to bring the alkalinity low enough. The pH target range is typically between 5.5 and 6. If the starting alkalinity is only moderately high, then a target of 6 may be appropriate. If the alkalinity is really high, then a target down in the 5.5 range might be needed.
What about using Five Star's 5.2 for treating your sparge water? Does it help or would I be better off getting some phosphoric acid?
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