BioGuard Scale Inhibitor | Scale & Stain Preventer

BioGuard Scale Inhibitor is a sequestrant — it keeps calcium and dissolved metals locked in solution so they can't precipitate onto your pool surfaces, plumbing, filter, or heater. It's the product that prevents two expensive problems before they start: scale buildup from high calcium and staining from iron, copper, and manganese.

Both problems work the same way. Minerals dissolved in water are invisible and harmless. The trouble begins when conditions shift — a rise in pH, a temperature increase, a chlorine addition — and those minerals come out of solution and deposit onto whatever surface they land on. Calcium becomes the white, crusty scale that builds on tile and roughens plaster. Iron and copper become brown, green, or black staining that brushing won't touch.

The most expensive place either one shows up is the heater. Scale on a heat exchanger insulates it, forcing longer run times, driving up gas or electric costs, and eventually causing failure. A sequestrant is dramatically cheaper than a heat exchanger.

This formulation has been reformulated and is four times more effective than the previous version, and it keeps working three to four weeks after application — so a monthly maintenance dose actually covers the month. It won't affect pH, so protecting your equipment doesn't create a balancing job.

It also handles fresh metal stains. Staining less than five days old can often be lifted with a treatment dose and daily brushing. Stains that have aged into the surface are a different and much harder problem — covered below.