BioGuard® Pool Closing Complete – 3‑in‑1 Winterizing Formula (2 L) – part #25771BIO
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Product Overview
This concentrated 3-in-1 formula clarifies water, prevents scale and corrosion, and protects pool surfaces and equipment during winter months. It's safe for all pool types — in-ground, above-ground, chlorine, bromine, and saltwater — and one 2 L bottle treats up to 25,000 gallons (use half the bottle for pools 12,000 gallons or smaller to save product).
Apply by slowly pouring around the deep end while the pump runs, followed by two hours of circulation. It's compatible with BioGuard Arctic Blue winter kits, but powerful enough to be used on its own as a final closing step to simplify spring start-up and reduce maintenance.
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