{"product_id":"canna-pk-13-14","title":"Canna PK 13\/14","description":"\u003ch2\u003eCanna PK 13\/14 — The One-Week Flowering Booster\u003c\/h2\u003e\n\u003cp\u003eCanna PK 13\/14 is a high-grade mixture of pure phosphorus and potassium — the two elements a plant's demand for spikes hard during flowering. Through a special production process Canna combines both in very high concentrations that are quickly and directly available, so when you add it at the right moment, the flowering plant's increased needs are fully met and fruits reach maximum development.\u003c\/p\u003e\n\u003ch3\u003eGenuine UK Stock\u003c\/h3\u003e\n\u003cp\u003eWe only sell genuine UK-market Canna, supplied through Canna's official UK distribution — current UK-label bottles, dispatched fast from our UK warehouse.\u003c\/p\u003e\n\u003ch3\u003eHow to use PK 13\/14 — Canna's actual instructions\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhen:\u003c\/strong\u003e add three weeks before harvest.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDosage:\u003c\/strong\u003e dissolve 15ml per 10 litres of water (1:666) into a full nutrient tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDuration: one week only.\u003c\/strong\u003e This is Canna's explicit guidance — their base feeds already carry P and K, so PK 13\/14 is a one-week ratio shift, not a running additive.\u003c\/li\u003e\n\u003cli\u003eWorks in every medium — soil, coco, recirculating and run-to-waste — indoors and out.\u003c\/li\u003e\n\u003cli\u003eExact timing against your schedule is in our \u003ca href=\"\/pages\/canna-feed-chart\"\u003eCanna feed chart guide\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eThe Boost pairing\u003c\/h3\u003e\n\u003cp\u003eCanna designed \u003ca href=\"\/products\/canna-boost\"\u003eBoost Accelerator\u003c\/a\u003e and PK 13\/14 as a pair: PK supplies the extra flowering minerals, Boost drives the metabolism that turns them into weight. After the PK week, run your normal feed down and finish with \u003ca href=\"\/products\/canna-flush\"\u003eCanna Flush\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eFrequently asked questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eCan I run PK 13\/14 for several weeks at a low dose?\u003c\/strong\u003e\u003cbr\u003eYou'll see that advice around — but Canna's own answer is no: always one week. Their base nutrients already contain P and K; PK 13\/14 exists to shift the ratio at one precise moment, and running it longer risks overfeeding. We follow the manufacturer.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs PK 13\/14 the same as Boost?\u003c\/strong\u003e\u003cbr\u003eNo — PK is minerals, \u003ca href=\"\/products\/canna-boost\"\u003eBoost\u003c\/a\u003e is a metabolism stimulator. They're designed to work together, not substitute each other.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhich week exactly do I add it?\u003c\/strong\u003e\u003cbr\u003eThree weeks before your planned harvest. Check the \u003ca href=\"\/pages\/canna-feed-chart\"\u003efeed chart\u003c\/a\u003e to place it against your full schedule.\u003c\/p\u003e\n\u003cp\u003eBrowse the \u003ca href=\"\/collections\/canna\"\u003efull Canna range\u003c\/a\u003e — genuine UK stock, all lines.\u003c\/p\u003e","brand":"Canna","offers":[{"title":"250ml","offer_id":56010692886913,"sku":"PK1314250","price":5.99,"currency_code":"GBP","in_stock":true},{"title":"1L","offer_id":56010692919681,"sku":"PK13141L","price":13.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0525\/9060\/8574\/files\/prod-additives-canna-pk-1314_png.webp?v=1785607068","url":"https:\/\/ledgrowshop.co.uk\/products\/canna-pk-13-14","provider":"LED GROW SHOP UK","version":"1.0","type":"link"}