Knockdown High Performance Flocculant Returning an empty bottle?:Yes Safe for all sanitizing systems

Safe for all sanitizing systems and surfaces

Reduces chemical demand and maintenance time

and plaster finishes

Scale Gone is safe for all surfaces and ideal for ongoing maintenance

easy pool and spa water testing

Knockdown High Performance Flocculant Returning an empty bottle?:Yes Safe for all sanitizing systemsDrop 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