{"product_id":"flairform-pythoff","title":"Flairform Pythoff Reservoir Steriliser","description":"\u003ch2\u003eKeep your reservoir and root zone free of pythium, all season long\u003c\/h2\u003e\u003cp\u003ePythoff is a nutrient-solution steriliser built to stay active for longer than standard sterilising agents. Once dissolved into the reservoir it works on every wetted surface it reaches - tanks, pump housings, drip lines, growing media and the roots themselves - rather than treating the water alone. That matters because pythium and other root pathogens don't just live in solution; they colonise pipework, filters and substrate, and a steriliser that only treats the visible water misses the source of most reinfections.\u003c\/p\u003e\u003cp\u003eAdd it to the reservoir on every fresh mix as a preventative measure, or step up the dose rate at the first sign of a pythium outbreak - wilting despite wet media, brown or slimy root tips, a sour smell from the tank. It's non-systemic, so it's suitable right through to harvest, including for growers working to organic protocols that rule out systemic chemistry. It performs across recirculating hydro, drip and flood-and-drain coco setups and in soil irrigation lines equally well.\u003c\/p\u003e\u003cp\u003eOne practical note: Pythoff doesn't play well with hydrogen peroxide or any beneficial bacteria\/fungi product (mycorrhizae, Trichoderma and similar) - running it alongside either will undo both. Keep it as a standalone reservoir treatment and, if you're using a biological inoculant, alternate rather than combine.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eSterilises tanks, pumps, drip lines, media and roots - not just the nutrient solution\u003c\/li\u003e\n\u003cli\u003eStays active in the reservoir for longer than standard sterilising agents\u003c\/li\u003e\n\u003cli\u003eNon-systemic, so safe to use from seed through to harvest\u003c\/li\u003e\n\u003cli\u003eSuitable for organic-compliant growing where systemic chemicals aren't permitted\u003c\/li\u003e\n\u003cli\u003eWorks across hydroponic, coco and soil irrigation systems\u003c\/li\u003e\n\u003cli\u003eHelps prevent blocked drippers, jets and filters caused by biological build-up\u003c\/li\u003e\n\u003c\/ul\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;\"\u003eFlairform Pythoff · hydroponics, coco and soil\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;\"\u003eStage\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;\"\u003eEvery stage from cuttings to harvest — soft-water and hard-water charts alike\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e0.2 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e2 ml\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background:#fcfaf4;\"\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;\"\u003eRoot-zone flush, every 7 to 14 days, in water at pH 5.0–6.0\u003c\/td\u003e\n\u003ctd style=\"padding:12px 14px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;font-weight:600;\"\u003e0.2 ml\u003c\/td\u003e\n\u003ctd style=\"padding:12px 20px;border-top:1px solid #ededed;text-align:right;white-space:nowrap;color:#6b6b6b;\"\u003e2 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 — Flairform publish this as 0.2 ml per litre of water; their charts are metric throughout and carry no gallon figures. \u003cstrong\u003eTwo hard manufacturer rules: if using Pythoff, always add it to the reservoir first; and do NOT use beneficial bacteria with Pythoff.\u003c\/strong\u003e Never add chlorine, peroxide or pre-mix products in concentrated form. Flairform: “This dose chart serves as a guide only.” Check pH and EC after mixing.\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Flairform","offers":[{"title":"250ml","offer_id":53500705734922,"sku":"FLF-PYT-250ML","price":16.9,"currency_code":"GBP","in_stock":true},{"title":"1L","offer_id":53500705767690,"sku":"FLF-PYT-1L","price":36.95,"currency_code":"GBP","in_stock":true},{"title":"5L","offer_id":53500705800458,"sku":"FLF-PYT-5L","price":129.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/91197-1Litre.jpg?v=1786377440","url":"https:\/\/hydrocropshop.co.uk\/products\/flairform-pythoff","provider":"Hydro Crop Shop","version":"1.0","type":"link"}