{"product_id":"ionic-pk","title":"Ionic PK","description":"\u003cp\u003e\u003cstrong\u003eIn stock now.\u003c\/strong\u003e Phosphorus and potassium at 14:15, for the hungriest weeks.\u003c\/p\u003e\u003cp\u003eIONIC PK replenishes the phosphorus and potassium that hard-working crops strip fastest, lifting the K to N ratio exactly when flowering demands it. Fortified with iron for the energy demands of bloom, and highly concentrated at 14:15.\u003c\/p\u003e\u003cp\u003eUse alongside any base feed through peak flowering.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eP and K at 14:15, highly concentrated\u003c\/li\u003e\n\u003cli\u003eReplenishes what heavy-feeding crops strip fastest\u003c\/li\u003e\n\u003cli\u003eFortified with iron for bloom\u003c\/li\u003e\n\u003cli\u003eUse alongside any base feed\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;\"\u003e1ml\/L, added on top of your base Bloom feed.\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 8–12, the heaviest-demand flowering weeks\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;\"\u003eWorks alongside every IONIC Bloom formula — \u003ca href=\"\/products\/ionic-soil-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eSoil Bloom\u003c\/a\u003e, \u003ca href=\"\/products\/ionic-hydro-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHydro Bloom\u003c\/a\u003e, \u003ca href=\"\/products\/ionic-hard-water-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHard Water Bloom\u003c\/a\u003e and \u003ca href=\"\/products\/ionic-coco-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eCoco Bloom\u003c\/a\u003e.\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;\"\u003eBring PK in from week 8 (once Tonic and Flower Boost are already established) and run it through week 12, alongside your base Bloom feed and \u003ca href=\"\/products\/ionic-flower-boost\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eFlower Boost\u003c\/a\u003e.\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 to the water one at a time, stirring between each. Never mix concentrates neat.\u003c\/li\u003e\n\u003cli\u003eKeep any stored solution covered — light in stored solution eventually means algae.\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=\"\/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=\"\/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=\"\/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=\"\/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\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003e\u003ca href=\"\/products\/ionic-hard-water-grow\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHard Water Grow\u003c\/a\u003e\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=\"\/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=\"\/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=\"\/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=\"\/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 hb-self\"\u003e\n\u003cdiv class=\"hb-range-name\"\u003ePK\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=\"\/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=\"\/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\u003eWhen do I start PK?\u003c\/summary\u003e\u003cp\u003eFrom week 8 of flowering, once your base Bloom feed and Tonic are already established — see any \u003ca href=\"\/products\/ionic-soil-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eBloom product page\u003c\/a\u003e for the full feeding notes.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eCan I use PK with any medium?\u003c\/summary\u003e\u003cp\u003eYes — the same PK schedule (weeks 8–12) applies whether you're running \u003ca href=\"\/products\/ionic-soil-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eSoil Bloom\u003c\/a\u003e, \u003ca href=\"\/products\/ionic-hydro-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHydro Bloom\u003c\/a\u003e, \u003ca href=\"\/products\/ionic-hard-water-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eHard Water Bloom\u003c\/a\u003e or \u003ca href=\"\/products\/ionic-coco-bloom\" style=\"color:#2f5f46;font-weight:600;text-decoration:underline;\"\u003eCoco Bloom\u003c\/a\u003e.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails\u003e\u003csummary\u003eIs PK a replacement for my base Bloom feed?\u003c\/summary\u003e\u003cp\u003eNo — it's a booster used on top of your base feed, not instead of it.\u003c\/p\u003e\u003c\/details\u003e","brand":"IONIC NUTRIENTS","offers":[{"title":"1L","offer_id":57211378991477,"sku":"12969","price":18.0,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":57211379024245,"sku":"12970","price":65.64,"currency_code":"GBP","in_stock":true},{"title":"20L","offer_id":57211379057013,"sku":"12971","price":144.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0561\/9092\/7032\/files\/ionic-nutrients-nutrients-ionic-base-nutrients-the-hydro-bros-1254941954.png?v=1787205253","url":"https:\/\/www.thehydrobros.com\/products\/ionic-pk","provider":"The Hydro Bros","version":"1.0","type":"link"}