{"product_id":"ionic-hard-water-grow","title":"Ionic Hard Water Grow","description":"\u003cp\u003e\u003cstrong\u003eIn stock now.\u003c\/strong\u003e The one-part vegetative feed, designed specifically for British hard water.\u003c\/p\u003e\u003cp\u003eHard tap water pushes pH high and brings its own calcium. IONIC Hard Water Grow neutralises the bicarbonates behind the pH climb, and is built on high-grade nitric acid, so less correcting acid is needed. Calcium is balanced to account for what your tap water already supplies. The potassium to nitrogen ratio is set for strong vegetative growth.\u003c\/p\u003e\u003cp\u003eSwitch to \u003ca href=\"\/fr\/products\/ionic-hard-water-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHard Water Bloom\u003c\/a\u003e when flowering starts.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eOne-part feed. No A and B mixing\u003c\/li\u003e\n\u003cli\u003eDesigned for British hard water\u003c\/li\u003e\n\u003cli\u003eNeutralises the bicarbonates that push hard water's pH high\u003c\/li\u003e\n\u003cli\u003eCalcium balanced for what your tap water already supplies\u003c\/li\u003e\n\u003cli\u003eK to N ratio set for vegetative growth\u003c\/li\u003e\n\u003c\/ul\u003e\u003cstyle\u003e\n.hb-qff .hb-qff-row { display: grid; grid-template-columns: 140px 1fr; gap: 14px; align-items: baseline; margin: 0 0 10px; }\n.hb-qff .hb-qff-row:last-child { margin-bottom: 0; }\n.hb-qff dt, .hb-qff dd { margin: 0; }\n@media (max-width: 480px) {\n  .hb-qff .hb-qff-row { grid-template-columns: 1fr; gap: 3px; }\n}\n.hb-range-list { margin: 16px 0; border-top: 1px solid #ded6bf; }\n.hb-range-item { padding: 12px 4px; border-bottom: 1px solid #ded6bf; }\n.hb-range-item.hb-self { background: #f6f3ea; padding-left: 10px; padding-right: 10px; }\n.hb-range-name { font-size: 14.5px; font-weight: 700; color: #2f5f46; margin: 0 0 3px; }\n.hb-range-item.hb-self .hb-range-name { color: #262319; }\n.hb-range-does { font-size: 13.5px; line-height: 1.45; color: #262319; margin: 0 0 2px; }\n.hb-range-when { font-size: 12.5px; line-height: 1.4; color: #756f5c; margin: 0; }\n\u003c\/style\u003e\n\u003cdiv class=\"hb-qff\" style=\"background: #f1ede2; border: 1px solid #ded6bf; border-radius: 6px; padding: 18px 20px; margin: 16px 0 20px 0;\"\u003e\n\u003cdiv style=\"display: flex; align-items: center; justify-content: space-between; font-size: 10.5px; font-weight: 700; letter-spacing: 0.12em; text-transform: uppercase; color: #2f5f46; margin: 0 0 14px; padding-bottom: 12px; border-bottom: 1px solid #ded6bf;\"\u003e\n\u003cspan\u003eQuick Feed Facts\u003c\/span\u003e\n\u003cspan style=\"color: #8a8570; font-weight: 500; letter-spacing: 0.06em;\"\u003eTHE HYDRO BROS\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdl style=\"margin: 0;\"\u003e\n\u003cdiv class=\"hb-qff-row\"\u003e\n\u003cdt style=\"font-size: 11px; font-weight: 600; color: #756f5c;\"\u003eDilution \/ Dose\u003c\/dt\u003e\n\u003cdd style=\"font-size: 13.5px; line-height: 1.5; color: #262319;\"\u003e5ml\/L in weeks 1–3, rising to 6ml\/L from week 4, alongside Root Boost at 0.5–1ml\/L — EC runs higher than the standard Hydro range to offset hard water's own mineral content.\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-qff-row\"\u003e\n\u003cdt style=\"font-size: 11px; font-weight: 600; color: #756f5c;\"\u003eWhen To Use\u003c\/dt\u003e\n\u003cdd style=\"font-size: 13.5px; line-height: 1.5; color: #262319;\"\u003eWeeks 1–5 of the grow cycle (hard\/tap water)\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-qff-row\"\u003e\n\u003cdt style=\"font-size: 11px; font-weight: 600; color: #756f5c;\"\u003eSubstrate Fit\u003c\/dt\u003e\n\u003cdd style=\"font-size: 13.5px; line-height: 1.5; color: #262319;\"\u003eBuilt specifically for hard water. IONIC doses differently by medium — Soil, Hydro, Hard Water and Coco each have their own schedule, so don't cross them over.\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-qff-row\"\u003e\n\u003cdt style=\"font-size: 11px; font-weight: 600; color: #756f5c;\"\u003eGrower Notes\u003c\/dt\u003e\n\u003cdd style=\"font-size: 13.5px; line-height: 1.5; color: #262319;\"\u003eNeutralises the bicarbonates that push British tap water's pH high. On soft or RO water, use \u003ca href=\"\/fr\/products\/ionic-hydro-grow\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHydro Grow\u003c\/a\u003e and its own schedule instead. Tonic isn't on this schedule — only add \u003ca href=\"\/fr\/products\/ionic-tonic\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eTonic\u003c\/a\u003e if you see a recognised deficiency, at 0.5ml\/L for one week.\u003c\/dd\u003e\n\u003c\/div\u003e\n\u003c\/dl\u003e\n\u003c\/div\u003e\u003ch3\u003eGood practice\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAdd products one at a time, stirring between each. Never mix concentrates neat.\u003c\/li\u003e\n\u003cli\u003eKeep the tank covered — light in stored solution eventually means algae.\u003c\/li\u003e\n\u003cli\u003eOn soft or RO water? Use the standard IONIC Hydro range and its own schedule instead.\u003c\/li\u003e\n\u003cli\u003eUse IONIC Tonic only where there is a recognised need: 0.5ml per litre for one week.\u003c\/li\u003e\n\u003cli\u003eMeasure every dose — eyeballing is where most feed problems start.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eThe Ionic Range\u003c\/h2\u003e\n\u003cp\u003eIONIC is one system, twelve products — a dedicated Grow and Bloom feed for each growing medium, plus four boosters used across all of them. Here's the full range:\u003c\/p\u003e\n\u003cdiv class=\"hb-range-list\"\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-soil-grow\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eSoil Grow\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eVegetative base feed for soil\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 1–5 of the grow cycle (soil)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-soil-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eSoil Bloom\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eFlowering base feed for soil\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 6–12; water-only flush in week 13 (soil)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-hydro-grow\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHydro Grow\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eVegetative base feed for hydro on soft\/RO water\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 1–5 of the grow cycle (soft\/RO water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-hydro-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHydro Bloom\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eFlowering base feed for hydro on soft\/RO water\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 6–12; water-only flush in week 13 (soft\/RO water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item hb-self\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003eHard Water Grow\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eVegetative base feed for hydro on hard\/tap water\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 1–5 of the grow cycle (hard\/tap water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-hard-water-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHard Water Bloom\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eFlowering base feed for hydro on hard\/tap water\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 6–12; water-only flush in week 13 (hard\/tap water)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-coco-grow\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eCoco Grow\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eVegetative base feed for coco coir\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 1–5 of the grow cycle (coco coir)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-coco-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eCoco Bloom\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eFlowering base feed for coco coir\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 6–13; light feed continues right through to harvest (coco coir)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-tonic\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eTonic\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eCalcium \u0026amp; magnesium top-up that corrects deficiency\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 6–10 in soil\/hydro; weeks 3–10 in coco; hard water only if a deficiency shows\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-pk\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003ePK\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003ePhosphorus \u0026amp; potassium flowering booster\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 8–12, the heaviest-demand flowering weeks\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-root-boost\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eRoot Boost\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003e100% organic root stimulant\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003ePropagation through early vegetative growth (weeks 1–4; weeks 1–2 in coco)\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"hb-range-item\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/fr\/products\/ionic-flower-boost\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eFlower Boost\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv class=\"hb-range-does\"\u003eBloom stimulant for yield and flavour\u003c\/div\u003e\n\u003cdiv class=\"hb-range-when\"\u003eWeeks 5–9, every week from first flower to mid-bloom\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003ch2\u003eFAQs\u003c\/h2\u003e\u003cdetails\u003e\u003csummary\u003eHow is this different from standard Hydro Grow?\u003c\/summary\u003e\u003cp\u003eIt's built specifically for hard\/mains tap water — on high-grade nitric acid, so it needs less correcting acid, and it balances calcium for what hard water already supplies. Use \u003ca href=\"\/fr\/products\/ionic-hydro-grow\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHydro Grow\u003c\/a\u003e instead if you're on soft or RO water.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eDo I still need Tonic?\u003c\/summary\u003e\u003cp\u003eOnly if you see a recognised deficiency — it isn't part of the routine Hard Water schedule the way it is on soft water or coco.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eWhen do I switch to Bloom?\u003c\/summary\u003e\u003cp\u003eMove onto \u003ca href=\"\/fr\/products\/ionic-hard-water-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHard Water Bloom\u003c\/a\u003e from week 6.\u003c\/p\u003e\u003c\/details\u003e","brand":"IONIC NUTRIENTS","offers":[{"title":"1L","offer_id":57610559062389,"sku":"13882","price":14.28,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":57610559095157,"sku":"13883","price":37.8,"currency_code":"GBP","in_stock":true},{"title":"20L","offer_id":57610559127925,"sku":"13884","price":87.96,"currency_code":"GBP","in_stock":true}],"url":"https:\/\/www.thehydrobros.com\/fr\/products\/ionic-hard-water-grow","provider":"The Hydro Bros","version":"1.0","type":"link"}