HTH Advanced Shock | 1lb. | 52035

The HTH Pool Care Shock Advanced – 1 lb (Model 52035) is a fast-dissolving, Cal‑Hypo granular sanitizer designed to restore crystal-clear pool water within 24 hours. This 4‑in‑1 formula effectively kills and prevents bacteria and algae, reduces chlorine odor and irritation, and doesn’t add stabilizers (CYA), avoiding overstabilization or chlorine lock. Ideal for weekly maintenance, one 1‑lb bag treats up to approximately 13,500 gal and is safe for all pool types—including vinyl-lined and saltwater systems. Trusted by pool owners and professionals, this advanced shock delivers brilliant sparkle and healthy water balance with convenient, reliable performance. Highlights Fast-Dissolving Cal-Hypo Shock – Quickly clears cloudy water in 24 hours with a powerful 4-in-1 sanitizing formula. Kills Bacteria & Algae – Effectively eliminates contaminants while preventing future growth for healthier pool water. No Added Stabilizer (CYA) – Won’t contribute to overstabilization or chlorine