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Traditional chlorine products contain cyanuric acid (CYA). When too much CYA builds up, it can cause overstabilization or chlorine lock, cloud your...

Non-Domestic Product: No  By: HTH Buy 2 bottles & Save!   Raises pH in spas and hot tubs Contains mineral crystals Allows sanitizer work mo...

  1" Chlorinating Tablets By: HTH Buy Two Bottles & Save!! 5lb PER tub Kills bacteria & algae 4 tablets per 10,000 gallons 80 - 120 ppm ...

Pool Care ShocksBy: HTH Buy 2 Bags and Save!  13.3 oz PER bag = 26.6 oz TOTAL Effective treatment for weekly use  Increase chlorine levels quick...

Pool Care Shock By: HTH 13.3 oz Shock treatment Effective treatment for weekly use  Increase chlorine levels quickly  Prevents algae build up  ...

Pool Care ShockBy: HTH Buy Four Bags & Save! Effective shock for weekly use Increases chlorine levels quickly Prevents algae Cal Hypo for vis...

Pool Care Shock GranulesBy: HTH  5.5lbs shock granules  Granules  Restores clarity Prevents bacteria & algae Increases chlorine levels  Cal-H...

Pool ClarifierBy: HTH Buy 3 Bottles and Save! Restores pool water to crystal clear One-quart PER bottle = 3 quarts TOTAL Does not affect pH balan...

  Spa ClarifierBy: HTH Spa Buy 3 Bottles & Save! Each bottle is 16 oz for a total of 48 oz Restores crystal clarity Concentrated formula Not...

  Clarifier Advanced By: HTH Buy Two Bottles & Save!! 1 quart PER bottle, 2 quarts TOTAL Dual action Clears dull, hazy or cloudy water Makes...

Calcium Hardness Up Treatment For Pools By: HTH Buy 2 bags and Save!  2 lbs PER bag = 8 lbs TOTAL Prevents corrosion of the pool surfaces Protect...

  HTH Alkalinity Up Balancer By: HTH Spa 5 lb Bag Raises alkalinity The HTH Alkalinity Up helps balance the total alkalinity in your pool wa...

  Algae Guard 1 Gallon By: HTH 10% Strength Prevents green algae Non-Foaming Compatible with salt systems Non-Domestic Product: NoLOC: AC10009...

2 Gallon Algae Guard  By: HTH Buy 2 bottles and save!  1 Gallon PER container = 2 gallons TOTAL 10% Strength Prevents green algae Non-Foaming Co...

Pool Water Stabilizer By: HTH 4lbs of Granules Stabilizer helps protect and extend the life of chlorine in your swimming pool Slows down loss of ...

  Metal, Stain & Scale Control By: HTH Buy 2 bottles and save!  32oz PER bottle of solution, 64oz TOTAL Protects against metals, stain and s...

pH Up GranulesBy: HTH Pool Care  Buy 2 packages and save!  4lbs PER bag = 8lbs TOTAL Raises pH Protects against skin & eye irritation Prevent...

Buy Two Bottles And Save!! Each bottle is 32 oz = 64 oz total Effective fast acting algae control Kills & prevents green, black, and mustard ...

(2) Alkalinity Up Powder By: HTH Spa Buy 2 bottles and save!  1.25lbs PER bottle = 2.5lbs TOTAL Raises total alkalinity  Helps control pH Protect...

1" Chlorinating TabletsBy: HTH 5lb tub Kills bacteria & algae 4 tablets per 10,000 gallons 80 - 120 ppm total alkalinity 7.2 - 7.6 pH Above...

HTH pool care 1 in. chlorine tablets are a simple, convenient way to keep your pool water clean and clear. Simply place tab into the skimmer basket...

Algae Guard Pool CareBy: HTH Buy Two Bottles And Save! Each bottle is 32oz = 64 oz total Pool care  All algae eliminator Destroys and prevents gr...

HTH Pool Care Shock Ultra 1 lb. (formerly HTH Ultimate Shock Treatment). Use this all-in-one powerhouse to quickly and easily increase chlorine lev...

  5lbs Non-Chlorine Shock Oxidizer By: HTH Spa Buy 2 bottles and save! Clears cloudy water Eliminates odors and contaminants Clears soaps and o...

HTH Spa Clarifier is a powerful, concentrated formula that helps you restore crystal clarity in your spa water. It coagulates suspended products so...