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Ships within 48 hours · Estimated delivery Aug 8 - Aug 13
Ready-to-soak in just 15 minutes
Testing Time: Nitrite results in 30 seconds
Durable 48Y frame extends life in demanding spa environments
5HP motor delivers smooth
St. Cyr Stain Preventer 1qt Spa Heaters Ready-to-soak in just 15 minutesSt. Cyr Stain Preventer 1qt (No Returns On Chemicals) St. Cyr Stain Preventer 1qt for pools is a stain and scale control product formulated to prevent and remove unsightly stains and scale caused by metals like iron, copper, and manganese, as well as high calcium hardness, in swimming pools. This type of sequestering agent is especially important when filling your pool with tap water, which may contain these metals and minerals that can discolor water