HTH™ Pool Care Drop Out™ Flocculant: Flocculant for PoolsHTH Pool Care Drop Out Flocculant restores crystal clarity to dull or cloudy water overnight. This powerful pool flocculant binds together fine particles, dirt, and dead algae, dropping them to the pool floor for vacuum to waste removal. Its dual action formula not only clears water quickly but also removes phosphates that feed algae growthhelping you maintain a healthier, more balanced pool. Safe for all pool types and pH levels, HTH Pool Care Drop