Flood and Drain Hydroponic Grow Systems Please note: This item is special order and may take an additional 2 days to ship. Ready for giant yields in a system that’s easy to manage with a flexible layout? Invest in the tried, tested, proven IWS Flood & Drain System. How's it work? It’s all about getting oxygen to the roots. When feeding, plant pots are flooded with feed. When feeding ends, pots are quickly drained of feed. This locks oxygen in the rootzone, to drive nutrient uptake, fuel growth & prevent nasty root diseases. It's simple, but it works. Flood & drain growing system 13mm / 16mm (inner / outer diameter) pipework Handy fixed timer (15 minute segments) 10 litre IWS Punched Pots Flexible, modular layout – position pots how you want Easy to manage – pots are filled from a single tank Quiet – the pumps hardly ever on! Saves headroom - pots sit on the floor Low waste! Drained feed is stored for recirculation Extreme oxygen – better roots, growth, nutrient uptake Simple to set up and program Waste is low - drained feed is stored between floods. It'll run quietly too, the pump's hardly ever on! It’s easy to fine tune your flood times using a segmental timer (located on the side of the brain). Your layout’s flexible…expand it & position pots however you want – all pots are connected to a central feed tank individually or in groups. Pots sit on the floor too, height's hardly an issue. Note that these kits now come with black flexi pipe, rather than white RhizoLine pipe. See It In Action Top Tips 1. Choosing your media Use clay pebbles – they hold lots of air, but hardly any nutrients. They’re perfect for flood and drain. Or To flood less often, mix 20 – 40% of coco with 60 – 80% of clay pebbles. The mix will hold more water, so you can flood less often. You can mix this yourself, or buy it pre-mixed. 2. Keeping a sterile system Keep your system sterile with Silver Bullet Roots. It kills 99.99% of root diseases and stays active in tanks for 5 weeks! If you already use Oxy-Plus 11.9%, switch to Silver Bullet and you’ll save 55%. Layout Guides How To Use Assembling Your System It’s easy to assemble your IWS Flood System. Watch this video to see how. Choose Your Nutrients For best result, use it with SHOGUN Hydro Nutrients – the best base feed for hydro systems. Choose Your Growing Media Use clay pebbles as your growing media – they hold lots of air, but hardly any nutrients. They’re perfect for flood and drain. Or If you want to flood less often, mix 20 – 40% of coco with 60 – 80% of clay pebbles. The mix will hold more water, so you can flood less often. You can mix this yourself, or buy it pre-mixed. Prevent Root Blockages Place RhizoPots on the inside each pot to prevent root blockages. They naturally air prune roots, so they won't grow into your feed pipe and cause blockages. How To Use Assembling Your System It’s easy to assemble your IWS Flood System. Watch this video to see how. Choose Your Nutrients For best result, use it with SHOGUN Hydro Nutrients – the best base feed for hydro systems. Choose Your Growing Media Use clay pebbles as your growing media – they hold lots of air, but hardly any nutrients. They’re perfect for flood and drain. Or If you want to flood less often, mix 20 – 40% of coco with 60 – 80% of clay pebbles. The mix will hold more water, so you can flood less often. You can mix this yourself, or buy it pre-mixed. Prevent Root Blockages Place RhizoPots on the inside each pot to prevent root blockages. They naturally air prune roots, so they won't grow into your feed pipe and cause blockages. Feed Time Guide for 60/40 Start: 2 x 15 minutes feeds per day Veg: 3 x 15 minute feeds per day Flowering: 4 - 5 x 15 minutes feeds per day Feed Time Guide for pebbles: Start: 2 x 15 minutes feeds per day Veg: 3 - 4 x 15 minute feeds per day Flowering: 4 - 6 x 15 minutes feeds per day