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The PoolRx Black/White Booster Minerals - 20k-30k (332066) contains the additional minerals needed to replace minerals that are lost through back wash, splash out and algae kill. PoolRx+ booster can also be used for larger pools that need additional minerals when initially installing a PoolRx unit. These minerals do not need to go back into the PoolRx unit; they just need to dissolve back into the pool water. These minerals generally need to be replaces every 4 – 6 months, depending on your swim conditions.
Directions for use: