HTH

HTH 1-inch chlorine tabs are a chlorine-based pool treatment designed to help keep swimming water clear, supplied in a 1.5 lb (0.68 kg) pack. Sun-protected, slow-dissolving formula lasts up to one week — helps maintain chlorine in pool water over time. Chlorine-based tablets kill...

HTH Pool Care 3" Chlorine Tabs Advanced are individually wrapped pool tablets designed to sanitize pool water, clarify it, and control algae, supplied in a 5 lb (2.27 kg) pack of 3-inch (7.62 cm) tabs. Sanitizer, clarifier, and algaecide in one tablet — supports...

HTH Algae Guard Ultra is a swimming pool algaecide designed to kill heavy algae blooms and help prevent regrowth, with up to 3 months of protection in a 32 fl oz (946 mL) bottle. HTH’s strongest algae control — made for heavy pool algae...

HTH 2-Step Green to Blue Swimming Pool System is a pool treatment for severe algae blooms, combining a Cal Hypo shock and a flocculant to turn green water blue within 24 hours. Two-step pool treatment — addresses severe algae blooms with two complementary packs....

HTH Multi-Use Shock Treatment is a six-pack of swimming pool shock designed to treat, sanitize, and clarify pool water, with Cal Hypo as its active ingredient. Cal Hypo multi-use shock — treats, sanitizes, and clarifies swimming pool water. Weekly-use formula — HTH says it...

HTH Pool Care Shock Advanced is a 4-in-1 weekly pool shock treatment in a 12-pack, made to kill bacteria and algae and restore clear water without adding cyanuric acid (CYA). Fast-dissolving 4-in-1 formula — tackles several common pool-water concerns in one treatment. Kills bacteria...

HTH Pool Care Shock Advanced is a swimming pool shock treatment that raises chlorine levels to help keep pool water clear, with 15 1-lb (454 g) bags and 15 test strips in the pack. One bag treats 13,500 gallons (about 51,103 L) — dose...

HTH Pool Care Shock Advanced is a six-pack of 4-in-1 pool shock treatment for weekly water care, formulated to address bacteria, algae, chlorine odor and irritation, and water clarity. Fast-dissolving 4-in-1 formula — kills bacteria and algae, reduces chlorine odor and irritation, and restores...

HTH 52047 Swimming Pool Care Salt Shock is a dichlor pool shock treatment for saltwater pools, with 56% available chlorine and five fast-dissolving 12 oz (340 g) packets. Made for saltwater pools — works best with salt chlorine generators. 56% available chlorine in a...

HTH Spa Non-Chlorine Shock Oxidizer is a 2.25 lb (1.02 kg) spa and hot tub water-care treatment designed to clear cloudy water and reduce odor-causing contaminants without chlorine. Non-chlorine shock oxidizer — treat spa and hot tub water without adding chlorine shock. Designed to...