HTH ALGAE GUARD 10 1GAL

50 lb, hth pool filter sand, for use in all sand filters, active ingredient crystalline silica, quartz 87-99.9%.

Economical

5 pounds, 1 inch, chlorinating tablets, are an effective swimming pool water sanitizer, convenient & easy to use tablets are formulated to protect against chlorine loss in direct sunlight, & can be used in feeders, designed to dissolve slowly providing a steady source of available chlorine, up to 1 week.

pool care kit, for opening & closing pools, includes: hth 2 pounds ultimate shock treatment, 1 hth 12 ounces algae guard granules, 1 hth 1.25 pounds metal & stain defense granules, 10 hth multi purpose 6 way test strips, treats up to 20,000 gallons.