{"product_id":"fleck-backwashing-ph-neutralizer-system-calcite-corosex","title":"Fleck Backwashing pH Neutralizer System — Calcite + Corosex, 1.0–2.5 Cu Ft","description":"\u003cstyle\u003e\n.ro-wrap{--deep:#0a1628;--ocean:#0f3460;--sky:#2196f3;--aqua:#4dd0e1;--offwhite:#f2f7fc;--slate:#dce8f5;--text:#0d1f38;--muted:#4a6280;--radius:12px;font-family:'DM Sans',sans-serif;color:var(--text);line-height:1.6;overflow-wrap:break-word}\n.ro-wrap .ro-hero{background:linear-gradient(135deg,var(--deep),var(--ocean) 50%,#1a5276);color:#fff;padding:44px 36px;border-radius:var(--radius) var(--radius) 0 0}\n.ro-wrap .ro-eyebrow{font-size:14px!important;font-weight:600;letter-spacing:.18em;text-transform:uppercase;color:var(--aqua);margin-bottom:10px}\n.ro-wrap .ro-hero h2{font-size:clamp(26px,4vw,38px)!important;line-height:1.15;font-weight:400;color:#fff;margin:0 0 14px}\n.ro-wrap .ro-hero h2 em{color:var(--aqua)}\n.ro-wrap .ro-tagline{font-size:18px!important;color:rgba(255,255,255,.78);margin-bottom:22px}\n.ro-wrap .ro-badges{display:flex;flex-wrap:wrap;gap:10px}\n.ro-wrap .ro-badge{background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);font-size:15px!important;padding:6px 14px;border-radius:40px}\n.ro-wrap .ro-callout{background:var(--offwhite);border-left:4px solid var(--sky);padding:20px 24px}\n.ro-wrap .ro-section{padding:32px 36px;border-bottom:1px solid var(--slate)}\n.ro-wrap .ro-label{font-size:14px!important;font-weight:700;letter-spacing:.2em;text-transform:uppercase;color:var(--sky);margin-bottom:6px}\n.ro-wrap .ro-title{font-size:24px!important;color:var(--deep);margin:0 0 18px;font-weight:400}\n.ro-wrap table{width:100%;border-collapse:collapse}\n.ro-wrap th{background:var(--deep);color:#fff;font-size:15px!important;text-align:left;padding:10px 12px}\n.ro-wrap td{padding:10px 12px;border-bottom:1px solid var(--slate);vertical-align:top}\n.ro-wrap tr:nth-child(even) td{background:var(--offwhite)}\n.ro-wrap p,.ro-wrap li,.ro-wrap td{font-size:18px!important;line-height:1.6!important}\n.ro-wrap .pro-tip{background:#fffbeb;border:1px solid #f5d87a;border-radius:var(--radius);padding:18px 20px;margin:20px 36px}\n@media(max-width:640px){.ro-wrap .ro-hero{padding:32px 22px}.ro-wrap .ro-section{padding:26px 18px}.ro-wrap .pro-tip{margin:18px}}\n\u003c\/style\u003e\n\u003cdiv class=\"ro-wrap\"\u003e\n\u003cdiv class=\"ro-hero\"\u003e\n\u003cdiv class=\"ro-eyebrow\"\u003eWhole House pH Neutralizer\u003c\/div\u003e\n\u003ch2\u003eFleck Backwashing \u003cem\u003epH Neutralizer\u003c\/em\u003e — 1.0 to 2.5 Cu Ft\u003c\/h2\u003e\n\u003cdiv class=\"ro-tagline\"\u003eCalcite + Corosex blend that raises acidic well water to neutral and stops blue-green staining and pinhole leaks.\u003c\/div\u003e\n\u003cdiv class=\"ro-badges\"\u003e\n\u003cspan class=\"ro-badge\"\u003e✓ 90% Calcite \/ 10% Corosex\u003c\/span\u003e\u003cspan class=\"ro-badge\"\u003e✓ Automatic backwash\u003c\/span\u003e\u003cspan class=\"ro-badge\"\u003e✓ Ships free\u003c\/span\u003e\u003cspan class=\"ro-badge\"\u003e✓ Unassembled or fully assembled\u003c\/span\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-callout\"\u003e\u003cp\u003eAcidic water (pH below 7) slowly eats copper pipe and fixtures. This system runs your water through a bed of \u003cstrong\u003ePur-Cal calcite\u003c\/strong\u003e with a \u003cstrong\u003e10% Corosex (magnesium oxide)\u003c\/strong\u003e boost. The calcite raises pH and stops on its own near neutral; the Corosex adds extra lift for water in the low 6s. A Fleck control valve backwashes the bed on a schedule so it stays loose and does not channel.\u003c\/p\u003e\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003ePick your size\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eSizing by household and flow\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003eTank\u003c\/th\u003e\n\u003cth\u003eValve\u003c\/th\u003e\n\u003cth\u003eService flow\u003c\/th\u003e\n\u003cth\u003eBackwash\u003c\/th\u003e\n\u003cth\u003eTypical home\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e9\" × 48\"\u003c\/td\u003e\n\u003ctd\u003eFleck 5600 timer\u003c\/td\u003e\n\u003ctd\u003eup to 6 gpm\u003c\/td\u003e\n\u003ctd\u003e3.5 gpm\u003c\/td\u003e\n\u003ctd\u003e1–2 bathrooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1.5 cu ft\u003c\/td\u003e\n\u003ctd\u003e10\" × 54\"\u003c\/td\u003e\n\u003ctd\u003eFleck 5600 timer\u003c\/td\u003e\n\u003ctd\u003eup to 9 gpm\u003c\/td\u003e\n\u003ctd\u003e5.0 gpm\u003c\/td\u003e\n\u003ctd\u003e2–3 bathrooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.0 cu ft\u003c\/td\u003e\n\u003ctd\u003e12\" × 52\"\u003c\/td\u003e\n\u003ctd\u003eFleck 5600 timer\u003c\/td\u003e\n\u003ctd\u003eup to 12 gpm\u003c\/td\u003e\n\u003ctd\u003e7.0 gpm\u003c\/td\u003e\n\u003ctd\u003e3–4 bathrooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2.5 cu ft\u003c\/td\u003e\n\u003ctd\u003e13\" × 54\"\u003c\/td\u003e\n\u003ctd\u003eFleck 5800 SXT\u003c\/td\u003e\n\u003ctd\u003eup to 15 gpm\u003c\/td\u003e\n\u003ctd\u003e8.0 gpm\u003c\/td\u003e\n\u003ctd\u003e4–5 bathrooms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"margin-top:14px\"\u003eYour well pump must deliver the backwash rate shown. The 2.5 cu ft model uses the Fleck 5800 SXT because its backwash (about 7.4 gpm) is more than the 5600 drain can pass.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eWhat's in the box\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eComplete parts list\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl valve\u003c\/td\u003e\n\u003ctd\u003eFleck 5600 3-cycle 12-day timer filter valve (560001-001), or Fleck 5800 SXT 3-cycle filter valve (580006-003) with drain fitting and bezel on the 2.5 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMineral tank\u003c\/td\u003e\n\u003ctd\u003eAquatrol poly-wound tank with base, 2.5\" NPT top (9×48, 10×54, 12×52 or 13×54)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalcite\u003c\/td\u003e\n\u003ctd\u003ePur-Cal calcite (A8021-50) — 0.9 \/ 1.35 \/ 1.8 \/ 2.25 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCorosex\u003c\/td\u003e\n\u003ctd\u003eClack Corosex magnesium oxide (A8011) — 0.1 \/ 0.15 \/ 0.2 \/ 0.25 cu ft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eGravel underbed\u003c\/td\u003e\n\u003ctd\u003e#20 flint gravel — 12 \/ 15 \/ 25 \/ 30 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistributor\u003c\/td\u003e\n\u003ctd\u003e1.05\" riser tube with fine-mesh top basket and O-ring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBypass\u003c\/td\u003e\n\u003ctd\u003eFleck Noryl bypass valve with 1\" male NPT yoke\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrain flow control\u003c\/td\u003e\n\u003ctd\u003eSized to the tank (3.5 \/ 5.0 \/ 7.0 \/ 8.0 gpm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eUnassembled vs. assembled\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eTwo ways to ship\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eUnassembled (ships ground):\u003c\/strong\u003e tank, valve, bypass and each media bag ship in separate boxes by UPS. You load the gravel and media and thread on the valve.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAssembled (ships freight):\u003c\/strong\u003e we load the media, install the valve and bypass, and ship it on a pallet by LTL freight. The assembled price includes $150 for freight.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"ro-section\"\u003e\n\u003cdiv class=\"ro-label\"\u003eGood to know\u003c\/div\u003e\n\u003ch3 class=\"ro-title\"\u003eFit and upkeep\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBest for well water with pH about 6.0–6.9. For water below 6.0, use our Build Your System page to get a richer Corosex blend.\u003c\/li\u003e\n\u003cli\u003eNeutralizers add hardness as they work. If your water is already hard, put a softener after this system.\u003c\/li\u003e\n\u003cli\u003eCalcite and Corosex dissolve as they work. Top up the media about once a year.\u003c\/li\u003e\n\u003cli\u003eInstall first in line, after the pressure tank and before any softener or carbon filter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"pro-tip\"\u003e\u003cp\u003e🔧 \u003cstrong\u003ePro tip:\u003c\/strong\u003e Test pH at a faucet a day after startup, then again after a month. If pH is still under 7, add a little more Corosex at your next top-up.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n","brand":"Fleck","offers":[{"title":"1.0 Cu Ft (9x48) - Fleck 5600 \/ Unassembled (ships ground)","offer_id":48479605555371,"sku":"5600-T-1.0-PH","price":1198.99,"currency_code":"USD","in_stock":true},{"title":"1.5 Cu Ft (10x54) - Fleck 5600 \/ Unassembled (ships ground)","offer_id":48479605588139,"sku":"5600-T-1.5-PH","price":1258.61,"currency_code":"USD","in_stock":true},{"title":"2.0 Cu Ft (12x52) - Fleck 5600 \/ Unassembled (ships ground)","offer_id":48479605620907,"sku":"5600-T-2.0-PH","price":1362.18,"currency_code":"USD","in_stock":true},{"title":"2.5 Cu Ft (13x54) - Fleck 5800 SXT \/ Unassembled (ships ground)","offer_id":48479605653675,"sku":"5800SXT-2.5-PH","price":1471.19,"currency_code":"USD","in_stock":true},{"title":"1.0 Cu Ft (9x48) - Fleck 5600 \/ Assembled (ships freight)","offer_id":48479605686443,"sku":"5600-T-1.0-PH-A","price":1348.99,"currency_code":"USD","in_stock":true},{"title":"1.5 Cu Ft (10x54) - Fleck 5600 \/ Assembled (ships freight)","offer_id":48479605719211,"sku":"5600-T-1.5-PH-A","price":1408.61,"currency_code":"USD","in_stock":true},{"title":"2.0 Cu Ft (12x52) - Fleck 5600 \/ Assembled (ships freight)","offer_id":48479605751979,"sku":"5600-T-2.0-PH-A","price":1512.18,"currency_code":"USD","in_stock":true},{"title":"2.5 Cu Ft (13x54) - Fleck 5800 SXT \/ Assembled (ships freight)","offer_id":48479605784747,"sku":"5800SXT-2.5-PH-A","price":1621.19,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0446\/7677\/6098\/files\/fleck-5600-12-day-timer-9-x-48-10-cu-ft-ph-neutralizer-766690.jpg?v=1791926641","url":"https:\/\/www.isopurewater.com\/products\/fleck-backwashing-ph-neutralizer-system-calcite-corosex","provider":"Isopure Water","version":"1.0","type":"link"}