Knockdown High Performance Flocculant Returning an empty bottle?:Yes Eliminates phosphates to prevent algae

Eliminates phosphates to prevent algae growth

Lo-Phos Max supports cleaner

copper-based formula designed to kill and prevent all common types of pool algae — including black

and odorless

and blue-green algae

Knockdown High Performance Flocculant Returning an empty bottle?:Yes Eliminates phosphates to prevent algaeDrop 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