Knockdown High Performance Flocculant Returning an empty bottle?:Yes wait a few seconds

wait a few seconds

and keep your pool beautiful year-round — no bulky covers required

vinyl liner

Safe for all sanitizing systems and surfaces

and plaster finishes

Knockdown High Performance Flocculant Returning an empty bottle?:Yes wait a few secondsDrop unfilterable debris for clear water. Fast. When clouds of debris make your pool look less than perfect, Knockdown delivers. This high performance, non alum flocculant binds fine particles into heavy clumps that sink to the bottom so you can easily vacuum them away. Unlike clarifiers that slowly burden your filter, Knockdown works fast with the pump off, restoring crystal clarity overnight. Its effective over a wide pH range, safe for all