Blue Horizons Flockfix Cartridges are slow release flocculant cartridge socks which are designed to assist the filter in removing small suspended particles to ensure sparkling clear water. They can also help remove copper, iron & manganese from pool water. Apply via a clean and empty skimmer basket and use with sand filters only. Also ensure that the pH is within the ideal range of 7.2 – 7.6 before applying.
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