Keep your pool clean and sparkling-blue with Poolbrite Alum Powder. Adjust pH to 7,8 or higher before addition of PoolBrite Alum Powder. Switch filter off and remove automatic pool cleaner. Broadcast PoolBrite Alum Powder, 150g per 10,000 litres of pool water, across the surface of the pool and allow to settle overnight. Next morning vacuum to waste using a manual pool vacuum sweeper. This needs to be done slowly as vigorous movements will cause the fine dust to swirl back into suspension. Check and correct pH on completion
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