{"product_id":"iws-pro-flood-drain-grow-system-with-icetube-pipe-big-punch-10-5l-inner-pots","title":"IWS Pro Remote Flood \u0026 Drain Grow System (10.5 Litre Punch Pots)","description":"```html\n\u003csection class=\"gh-product-listing\"\u003e\n\n\u003ch2\u003eIWS Pro Remote Flood \u0026amp; Drain Grow System (10.5L Punch Pots) — British-Built Automated Hydroponics\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eBest for:\u003c\/strong\u003e Commercial-scale growers and serious hobbyists who want precision automation without the premium brand markup\u003c\/p\u003e\n\n\u003cdiv class=\"gh-our-thoughts\" role=\"note\" aria-label=\"Our thoughts\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eOur thoughts\u003c\/strong\u003e\u003cbr\u003e\nThis is the system that built IWS's reputation for a reason. The Pro version is a genuinely clever piece of kit — faster flooding, dual drain pumps, proper modularity. If you're running more than a handful of pots and want your feeding on lock, it's worth the investment. One we sell a lot of for growers scaling up seriously.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eThe \u003cstrong\u003eIWS Pro Remote Flood \u0026amp; Drain System\u003c\/strong\u003e is a fully automated hydroponic grow system that takes the guesswork and labour out of tending to larger plant counts. This British-designed ebb and flow system uses gravity-fed, bottom-up nutrient delivery controlled by a precision remote timer, allowing you to flood and drain your plants at exact intervals throughout the day. The Pro version steps up from the standard with \u003cstrong\u003e25mm pipework, a 3000 litre per hour pump, and dual drain capability\u003c\/strong\u003e — meaning faster cycles, better root oxygenation, and measurably better growth rates.\u003c\/p\u003e\n\n\u003ch3\u003eHow it compares\u003c\/h3\u003e\n\u003cp\u003eThe IWS Pro sits at the serious end of automated flood and drain systems in the UK market.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFaster flood\/drain cycles than standard IWS systems — fills a 48-pot setup in under 10 minutes\u003c\/li\u003e\n\u003cli\u003eThicker 25mm pipework vs 13mm on the standard version — better flow, less restriction\u003c\/li\u003e\n\u003cli\u003eDual pump system halves drain time compared to single-pump alternatives\u003c\/li\u003e\n\u003cli\u003eModular design lets you start small (6 pots) and expand up to 48+ without replacing core components\u003c\/li\u003e\n\u003cli\u003eMore affordable than electronic-brain systems (Alien XL) while delivering comparable cycle speeds for most growing scenarios\u003c\/li\u003e\n\u003cli\u003eProven British engineering with decades of grower trust behind it\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCompared to deep water culture, you're paying less upfront and running far lower electricity costs. Compared to soil, you get precise nutrient control and zero guesswork on feeding.\u003c\/p\u003e\n\n\u003ch3\u003eUsage guidance\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eHow flood and drain works\u003c\/strong\u003e\u003cbr\u003e\nNutrient solution is pumped from the reservoir into the IWS Brain (a central manifold). As the Brain fills, all connected pots flood simultaneously. A float switch inside the Brain stops the pump when water reaches pot height, preventing overflow. When the timer cycles off, gravity drains everything back to the tank. Fresh oxygen rushes in as the media drains, supercharging root health and nutrient uptake.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSetting flood frequency\u003c\/strong\u003e\u003cbr\u003e\nThis depends on three things: your growing medium, plant size, and ambient temperature. Clay pebbles alone drain quickly and need more frequent floods (4-6 times daily). Coco or coco\/pebble blends retain moisture longer, so 2-4 floods daily often works better. Start conservative, observe your plants, and adjust via the remote timer in 1-minute increments.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eGrowing media choice\u003c\/strong\u003e\u003cbr\u003e\nWe recommend clay pebbles for this system — they offer excellent drainage and air retention. Coco or 60\/40 clay\/coco blends work equally well and give slightly better water retention if you prefer less frequent floods.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003ePot arrangement\u003c\/strong\u003e\u003cbr\u003e\nYou can arrange your pots however suits your space. The modular pipework means you're not locked into one configuration. Want to add or remove pots later? Literally just disconnect and reconnect the manifold fittings. No waste, no faffing.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eTank setup\u003c\/strong\u003e\u003cbr\u003e\nThe system comes with an IWS Flexi Tank (flexible, collapsible for storage). Place it lower than the pot level so gravity naturally drains back in. Tank size depends on pot count — the research brief suggests a 400L tank handles full systems comfortably.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePot size:\u003c\/strong\u003e 10.5 litres (Big Punch Inner Pots with drainage holes at base)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePipework:\u003c\/strong\u003e 25mm internal diameter PVC, upgraded from 13mm standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePump output:\u003c\/strong\u003e 3000 litres per hour\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrain system:\u003c\/strong\u003e Dual pump configuration for faster return to reservoir\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTimer:\u003c\/strong\u003e IWS Minute Timer — allows 1-minute precision control over flood duration and frequency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFloat switch:\u003c\/strong\u003e Integrated safety cutoff at pot height\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModularity:\u003c\/strong\u003e Expandable from 6 pots to 48+ pots using additional manifold connections\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTank:\u003c\/strong\u003e Flexi Tank (collapsible) included — approximately 400L capacity for full systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrowing media compatibility:\u003c\/strong\u003e Clay pebbles, coco, or 60\/40 clay\/coco blend\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign origin:\u003c\/strong\u003e British-designed and manufactured\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGrowers expanding beyond hand-watering who want zero labour automated feeding\u003c\/li\u003e\n\u003cli\u003eCommercial-scale cultivators running 20+ plants needing precision and reliability\u003c\/li\u003e\n\u003cli\u003eHobbyists serious about yield who want to eliminate human error from nutrient delivery\u003c\/li\u003e\n\u003cli\u003eGrowers who want to scale gradually — start at 6 pots, expand to 12, 24, 48 as confidence and space allow\u003c\/li\u003e\n\u003cli\u003eAnyone running controlled-environment growing who values consistency and repeatability\u003c\/li\u003e\n\u003cli\u003eGrowers on moderately tight budgets who want proven automation without paying for unnecessary electronics\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eOur take\u003c\/h3\u003e\n\u003cp\u003eThis is a proper workhorse. The IWS Pro delivers on what flood and drain does best — simple, automated, oxygen-rich root feeding that scales with you. The 25mm pipework and dual drain system mean faster cycles than you'd get elsewhere at this price point, and the modular design means you're not locked in.\u003c\/p\u003e\n\u003cp\u003eIf you're serious about growing and ready to move beyond hand-tending individual pots, this is worth picking up while stock lasts. British-built, time-tested by thousands of growers, and it does exactly what it should, day in, day out.\u003c\/p\u003e\n\n\u003c\/section\u003e\n```","brand":"IWS","offers":[{"title":"6 Pot (100 Litre Flexi Tank)","offer_id":47916659441834,"sku":"4640","price":766.99,"currency_code":"GBP","in_stock":true},{"title":"12 Pot (250 Litre Flexi Tank)","offer_id":47916659474602,"sku":"4646","price":834.99,"currency_code":"GBP","in_stock":true},{"title":"18 Pot (250 Litre Flexi Tank)","offer_id":47916659507370,"sku":"4647","price":969.99,"currency_code":"GBP","in_stock":true},{"title":"24 Pot (400 Litre Flexi Tank)","offer_id":47916659540138,"sku":"4653","price":1214.99,"currency_code":"GBP","in_stock":true},{"title":"36 Pot (400 Litre Flexi Tank)","offer_id":47916659572906,"sku":"4659","price":1459.99,"currency_code":"GBP","in_stock":true},{"title":"48 Pot (400 Litre Flexi Tank)","offer_id":47916659605674,"sku":"4663","price":1619.99,"currency_code":"GBP","in_stock":true},{"title":"48 Pot (750 Litre Flexi Tank)","offer_id":47916659638442,"sku":"125600","price":1729.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0053\/5540\/5400\/files\/iws_flood_drain_system_1_6feab30d-059c-49bc-89f0-d34052cbe843.jpg?v=1769198184","url":"https:\/\/growershouse.co.uk\/products\/iws-pro-flood-drain-grow-system-with-icetube-pipe-big-punch-10-5l-inner-pots","provider":"Growers House ","version":"1.0","type":"link"}