{"product_id":"cistern-catchment-bomb-shock-treatment-500g","title":"Solutions HOCL™ Cistern \u0026 Catchment Bomb™ Shock Treatment + Heavy-Duty Cleaner - 500g","description":"\u003ch2 style=\"font-size:18px;\"\u003e\u003cspan\u003e\u003cb\u003eCistern \u0026amp; Catchment Shock Treatment \u0026amp; Heavy Duty Water Tank Cleaner – 500 g Value Size\u003c\/b\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eLarge or multiple water storage systems often face \u003cb\u003erecurring buildup, slime formation, and persistent odors\u003c\/b\u003e, requiring frequent and more cost-effective cleaning solutions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe \u003cb\u003e500 g Value Size Shock Treatment\u003c\/b\u003e delivers the same HOCL-based deep cleaning power as the 100 g version but is optimized for \u003cb\u003elarger tanks and multi-system use\u003c\/b\u003e. It provides a cost-efficient way to perform repeated shock treatments while maintaining performance. Using \u003cb\u003eNatural Oxidation Technology™\u003c\/b\u003e, it breaks down organic buildup, remove slime, and neutralize odor-causing residues—making it ideal for farms, large properties, and off-grid systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis size treats \u003cb\u003e25,000 gallons\u003c\/b\u003e, offering approximately \u003cb\u003e2× more product per dollar\u003c\/b\u003e compared to the 100 g size.\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size:18px;\"\u003e\u003cstrong\u003eThe Same HOCL Technology, Built for Larger Cisterns and Farm Water Tanks\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThis 500G value size uses the exact same HOCL-based formulation as our 100G Shock Treatment. NaDCC (sodium dichloroisocyanurate) dissolves in water to generate hypochlorous acid (HOCL), an oxidizing compound that breaks down the organic residues responsible for slime and odor buildup on cistern and catchment tank surfaces:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eProteins from leaf litter, insects, and bird droppings entering rainwater catchment systems\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFatty acids from environmental runoff and organic debris in stored water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAmines from decaying organic matter accumulating in cistern and rainwater storage tanks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSulfur compounds from decomposing natural material causing unpleasant odors\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eAfter the oxidation reaction, the active ingredient converts primarily into salts and water, leaving no harsh bleach-based chemical residue in your large water storage tank. The 500G resealable pouch allows you to measure precisely the dose you need per treatment and store the remainder for your next scheduled cistern cleaning.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size:18px;\"\u003e\u003cstrong\u003eIdeal for These Large Cistern and Rainwater Storage Tank Applications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge residential and commercial cisterns\u003c\/strong\u003e\u003cspan\u003e, 5,000 to 25,000 gallons of rainwater storage capacity\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFarm water tanks and agricultural rainwater catchment systems\u003c\/strong\u003e\u003cspan\u003e needing cost-effective heavy-duty tank cleaning\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-building off-grid and rural properties\u003c\/strong\u003e\u003cspan\u003e with interconnected cistern and catchment water storage systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater storage systems\u003c\/strong\u003e\u003cspan\u003e that undergo periodic Shock Treatment cleaning followed by Monthly Maintenance \u0026amp; Light Cleaner upkeep\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAnyone looking for the best-value cistern shock treatment\u003c\/strong\u003e\u003cspan\u003e, at approximately 2.5× more product per dollar versus buying the 100G size multiple times\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size:18px;\"\u003e\u003cstrong\u003eHow to Use the 500G Value Size Cistern Shock Treatment\u003c\/strong\u003e\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003eCalculate total tank volume in gallons across all cisterns or rainwater storage tanks you plan to clean.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDose at 20 grams per 1,000 gallons of tank volume. Measure only the amount you need from the 500G resealable pouch and seal tightly after each use.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAdd the measured product directly into tank water or into inflow as the cistern fills.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAllow at least 1 hour of contact time. For heavy organic buildup on large cistern surfaces, allow several hours until the water clears.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSkim off any floating organic debris released from tank surfaces during the Shock Treatment.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFollow up monthly with our Cistern \u0026amp; Catchment Monthly Maintenance \u0026amp; Light Cleaner to help slow organic buildup from returning between Shock Treatments.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4 style=\"font-size:18px;\"\u003e\u003cstrong\u003eQuick Dose Guide - 500G Value Size\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cdiv\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\n\u003cp\u003e\u003cspan\u003eTank Volume\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth\u003e\n\u003cp\u003e\u003cspan\u003eDose Required\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth\u003e\n\u003cp\u003e\u003cspan\u003ePortion of Pouch\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003cth\u003e\n\u003cp\u003e\u003cspan\u003eNotes\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e5,000 gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e100 g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e1\/5 of pouch\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eSame as full 100G size\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e10,000 gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e200 g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e2\/5 of pouch\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eMid-size large cistern\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e15,000 gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e300 g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e3\/5 of pouch\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eLarge farm tank\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e25,000 gallons\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003e500 g\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eFull pouch\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003e\u003cspan\u003eFull single use of 500G value size\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"font-size:18px;\"\u003e\u003cb\u003eKey Benefits\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTreats \u003cb\u003e25,000 gallons\u003c\/b\u003e (20 g per 1,000 gallons)\u003c\/li\u003e\n\u003cli\u003eSame \u003cb\u003eHOCL-based Natural Oxidation Technology™\u003c\/b\u003e formula\u003c\/li\u003e\n\u003cli\u003eHelps remove \u003cb\u003eorganic buildup, slime, and odors\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003eIdeal for \u003cb\u003elarge cisterns, farms, and multi-building systems\u003c\/b\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eResealable pouch\u003c\/b\u003e for multiple treatments\u003c\/li\u003e\n\u003cli\u003eBetter \u003cb\u003ecost efficiency (value size savings)\u003c\/b\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size:18px;\"\u003e\u003cspan\u003e\u003cb\u003eHow It Works\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe formula generates \u003cb\u003ehypochlorous acid (HOCL)\u003c\/b\u003e in water, which oxidizes organic contaminants and helps break down residues that cause odor, discoloration, and buildup—supporting a cleaner and more manageable system.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size:18px;\"\u003e\u003cspan\u003e\u003cb\u003eImportant Note\u003c\/b\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThis product is \u003cb\u003enot NSF 60 Certified and not EPA registered\u003c\/b\u003e.\u003cbr\u003eIt is offered as a \u003cb\u003ecistern and catchment tank cleaner only\u003c\/b\u003e.\u003c\/span\u003e\u003c\/p\u003e","brand":"Solutions HOCL","offers":[{"title":"Default Title","offer_id":47387880784093,"sku":"Shock-treatment-500G","price":59.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/7995\/0301\/files\/Shock_Treatment_500g.webp?v=1780442559","url":"https:\/\/solutionshocl.com\/products\/cistern-catchment-bomb-shock-treatment-500g","provider":"Solutions HOCL","version":"1.0","type":"link"}