{"product_id":"hesi-pk-13-14","title":"Hesi PK 13\/14 Flowering Booster","description":"\u003ch2\u003eThe standard bulking PK, in Hesi's formulation\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eHesi PK 13\/14\u003c\/strong\u003e is a \u003cstrong\u003ephosphorus and potassium\u003c\/strong\u003e booster for the bulking weeks of flower. PK 13\/14 is an industry-standard ratio, and the differences between brands come down to purity and how well the solution holds together in a reservoir.\u003c\/p\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe standard bulking ratio\u003c\/strong\u003e - widely understood and easy to slot into any schedule\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean in solution\u003c\/strong\u003e - holds in a reservoir without dropping out\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStraight PK\u003c\/strong\u003e - no passengers you may already be feeding\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAny base feed\u003c\/strong\u003e - mineral or organic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePairs with Hesi Boost\u003c\/strong\u003e - minerals and metabolism from two different products\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFlowers that stop gaining in the last few weeks\u003c\/h3\u003e\u003cp\u003eDemand for phosphorus and potassium climbs sharply in the second half of flower, well past what a base feed carries. The plant plateaus, and the gap between a good yield and an average one is decided right there. Timing matters as much as dose - too late and there is nothing left to build with.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeeks 4 to 6 of flower:\u003c\/strong\u003e \u003cstrong\u003e1 to 1.5 ml per litre\u003c\/strong\u003e at every watering\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not stack:\u003c\/strong\u003e if you are already running another PK, use one or the other\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTaper:\u003c\/strong\u003e stop about a week before harvest and flush\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC:\u003c\/strong\u003e reduce the base feed as the PK goes up so total EC holds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWatch for:\u003c\/strong\u003e clawed, dark leaf tips mean too much\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRole:\u003c\/strong\u003e Bulking PK booster\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRatio:\u003c\/strong\u003e 13\/14 phosphorus to potassium\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTypical dose:\u003c\/strong\u003e 1 to 1.5 ml per litre\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWindow:\u003c\/strong\u003e Weeks 4 to 6 of flower\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse with:\u003c\/strong\u003e Hesi Boost\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedia:\u003c\/strong\u003e Soil, coco, hydroponics\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"hcs-dosing\" style=\"margin:32px 0 0;border:1px solid #e6e6e6;border-radius:12px;overflow:hidden;font-family:Montserrat,-apple-system,'Segoe UI',sans-serif;\"\u003e\n\u003cdiv style=\"background:#101010;padding:16px 20px;border-bottom:3px solid #efc04c;\"\u003e\n\u003cdiv style=\"color:#ffffff;font-size:17px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;\"\u003eFeed Chart\u003c\/div\u003e\n\u003cdiv style=\"margin-top:6px;color:#b8b8b8;font-size:12px;line-height:1.5;\"\u003eHesi PK 13\/14 · soil, coco and hydroponics\u003c\/div\u003e\n\u003c\/div\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:14px;color:#2b2b2b;background:#fff;\"\u003e\n\u003ctr style=\"background:#f4f4f4;\"\u003e\n\u003cth style=\"text-align:left;padding:10px 20px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6b6b;font-weight:600;\"\u003eWeek\u003c\/th\u003e\n\u003cth style=\"text-align:right;padding:10px 14px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6b6b;font-weight:600;white-space:nowrap;\"\u003ePer 1 L\u003c\/th\u003e\n\u003cth style=\"text-align:right;padding:10px 20px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:#6b6b6b;font-weight:600;white-space:nowrap;\"\u003ePer 10 L\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;\"\u003eFlower weeks 4 to 6 — at every watering\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e1–1.5 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e10–15 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cdiv style=\"background:#101010;padding:12px 20px;font-size:12px;color:#b8b8b8;line-height:1.6;\"\u003e\n\u003cspan style=\"color:#efc04c;font-weight:600;\"\u003eNote\u003c\/span\u003e — Do not stack PKs — if you are already running another, use one or the other. Reduce the base feed as the PK goes up so total EC holds, and stop about a week before harvest to flush. Clawed, dark leaf tips mean too much. Check pH and EC after mixing.\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Hesi","offers":[{"title":"500ml","offer_id":53496884953354,"sku":"NUT-HES-008-01","price":6.99,"currency_code":"GBP","in_stock":true},{"title":"1 Litre","offer_id":53496884986122,"sku":"NUT-HES-008-02","price":11.49,"currency_code":"GBP","in_stock":true},{"title":"5 Litre","offer_id":53496885018890,"sku":"NUT-HES-008-03","price":44.45,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/Hesi_PK_13-14_25cf4ece-b5f1-4c00-b652-8d8350ac6179.jpg?v=1786226558","url":"https:\/\/hydrocropshop.co.uk\/products\/hesi-pk-13-14","provider":"Hydro Crop Shop","version":"1.0","type":"link"}