Description
Pool Alum Crystals are a natural aluminium sulphate-based pool flocculant used to rapidly clear cloudy, murky, or dirty swimming pool water. Alum crystals work by reacting with pool water to form a gelatinous floc that attracts and binds fine suspended particles, dirt, algae, and debris together into larger, heavier clumps that sink to the pool floor for easy vacuuming and removal. This makes alum crystals particularly effective for treating severely cloudy water that standard filtration and clarifiers alone are unable to resolve. A tried and trusted pool water treatment used for decades, alum crystals are a cost-effective and natural alternative to synthetic flocculants, making them a popular choice for environmentally conscious pool owners. Suitable for use in all pool types, they are easy to apply and deliver dramatic water clarity improvements in a relatively short time, making them an essential emergency water clearing remedy for any pool owner’s maintenance toolkit.




