BioGuard PowerFloc 1 Qt. | Pool Flocculant

BioGuard PowerFloc is a very powerful flocculant for excessively cloudy water — the kind where you can't see the drain in the deep end. It works by a different route than a clarifier, and understanding that difference is the whole key to using it.

A clarifier gathers fine particles into slightly larger clumps so your filter can catch them. It's gradual, it's gentle, and the material leaves through the media over a day or two. A flocculant goes much further: it binds particles into masses heavy enough to sink, dropping everything to the pool floor as a visible layer of sediment. Then you vacuum it out to waste.

That makes PowerFloc the fastest option available for badly cloudy water, and the most labor-intensive. Overnight settling, then a slow careful vacuum, then water to replace what you removed. In exchange you get clear water in about a day instead of several.

It's built for the situations that produce genuinely bad water fast: after a rainstorm that dumped runoff and debris into the pool, or after a period when the pump wasn't running — an equipment failure, a power outage, or a week away on vacation. It has a useful property in those cases: the greater the amount of debris in the water, the faster it works. Heavy particle loads give the flocculant more to bind to, so the worst pools respond fastest.

For extremely cloudy pools where the drain isn't visible in the deep end, the label supports double the normal dosage.