{"product_id":"cistern-catchment-tank-monthly-maintenance-500g","title":"Solutions HOCL™ Cistern \u0026 Catchment Tank Cleaner™ Monthly Maintenance 500g","description":"\u003ch2 style=\"font-size: 18px;\"\u003e\u003cspan\u003eValue-Size Monthly Cistern and Catchment Tank Maintenance for Large Water Storage Systems\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eLarge cisterns, farm water tanks, and multi-building rainwater catchment systems need the same monthly maintenance routine as smaller home cisterns, only at a larger scale and with a higher product volume per treatment. The SolutionsHOCL™  Cistern and Catchment Monthly Maintenance and Light Cleaner in the 500G Value Size is built for exactly these larger systems. It delivers the same HOCL-Based Natural Oxidation Technology as the 100G in a resealable, multi-use pouch that provides approximately 2.5 times more product per dollar, making it the practical choice for any property running large or multiple stored water tank systems on a monthly cleaning routine.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size: 18px;\"\u003e\u003cspan\u003eThe Same Formula, Built for Larger Monthly Maintenance Needs\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThis 500G value size uses the exact same NaDCC formula as the 100G Monthly Maintenance product. At 20g per 1,000 gallons, NaDCC dissolves in cistern water to generate hypochlorous acid (HOCL), an oxidizing compound that helps break down the organic residues that accumulate on tank surfaces each month, including:\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 settling in stored water\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAmines from decaying organic matter in cistern and rainwater storage tanks\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eSulfur compounds from decomposing natural material contributing to tank odors\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eAfter the reaction, the active ingredient converts primarily into salts and water, leaving no harsh bleach-based residue in your water storage tank. The 500G resealable pouch lets you measure precisely the dose needed each month and store the remainder securely until the next treatment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cspan\u003eIdeal for These Large Cistern and Rainwater Storage Systems\u003c\/span\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eLarge residential and commercial cisterns of 5,000 to 25,000 gallons needing a cost-effective monthly cistern maintenance cleaner\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eFarm water tanks and agricultural rainwater catchment systems running an ongoing monthly tank cleaning routine after an initial Shock Treatment\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eMulti-building off-grid and rural properties with interconnected cistern systems that need a consistent monthly upkeep dose across a large combined tank volume\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eAnyone looking for the best-value monthly cistern cleaning product for large systems, at approximately 2.5 times more product per dollar compared to buying the 100G size month after month\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"font-size: 18px;\"\u003e\u003cspan\u003eHow to Use the 500G Value Size Monthly Maintenance Cleaner\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eDirections for monthly maintenance of large cistern and catchment tank systems:\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003eComplete your initial Shock Treatment first on all tanks in your system. This Monthly Maintenance product is designed to follow the Shock Treatment, not replace it.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eCalculate total tank volume in gallons across all cisterns or rainwater storage tanks you plan to maintain each month.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDose at 20g per 1,000 gallons of combined tank volume. Measure only what 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 the formula to work on organic residues on tank surfaces.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eRepeat once per month. If your tanks develop visible slime, heavy organic film, or strong odor between monthly treatments, return to the Shock Treatment for a full reset before resuming this monthly routine.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cspan\u003eQuick Dose Guide - 500G Monthly Maintenance Value Size\u003c\/span\u003e\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eTank Volume\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eMonthly Dose\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003ePortion of Pouch\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eNotes\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e5,000 gallons\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1\/5 of pouch\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eSame as one full 100G size\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e10,000 gallons\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e200g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2\/5 of pouch\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eMid-size large cistern system\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e15,000 gallons\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e300g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3\/5 of pouch\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eLarge farm or multi-tank system\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e25,000 gallons\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFull 500G pouch\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eFull single monthly use of 500G\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4 style=\"font-size: 18px;\"\u003e\u003cspan\u003eValue Comparison: 100G vs 500G Monthly Maintenance\u003c\/span\u003e\u003c\/h4\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cspan\u003eProduct\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eSize\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003ePrice\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eMax Gallons per Dose\u003c\/span\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cspan\u003eProduct per Dollar\u003c\/span\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMonthly Maintenance 100G\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e100g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e$19.97\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e5,000 gallons\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eBaseline (1x)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003eMonthly Maintenance 500G\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e500g\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e$49.97\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e25,000 gallons\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eApprox. 2.5x product per dollar\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3 style=\"font-size: 18px;\"\u003e\u003cb\u003eHow It Works\u003c\/b\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eWhen added to water, the formula generates \u003cb\u003ehypochlorous acid (HOCL)\u003c\/b\u003e—a powerful oxidizing molecule that reacts with organic contaminants such as proteins, fats, and sulfur compounds. This reaction helps lift buildup from surfaces and neutralize odors, leaving your system visibly cleaner.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 style=\"font-size: 18px;\"\u003e\u003cb\u003eImportant Note\u003c\/b\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 sold as a \u003cb\u003ecistern and catchment tank cleaner\u003c\/b\u003e, not as a disinfectant or sanitizer.\u003c\/span\u003e\u003c\/p\u003e","brand":"Solutions HOCL","offers":[{"title":"Default Title","offer_id":47387880620253,"sku":"Monthly-maintenance-500G","price":49.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0623\/7995\/0301\/files\/monthly_maintenanec_500g.webp?v=1780442693","url":"https:\/\/solutionshocl.com\/products\/cistern-catchment-tank-monthly-maintenance-500g","provider":"Solutions HOCL","version":"1.0","type":"link"}