Dr. Russell Sharp breaks down how water is controlled in hydroponic systems: pressure‑regulated drippers set the flow rate, spikes only deliver the water, and solenoid valves control timing. He explains why pipe size matters little, how blockage and water hardness affect drippers, and why pH or RO water are common choices. This short episode also previews dosing and fertigation meters to be covered next, and offers practical tips for automating reliable irrigation. https://eutrema.co.uk/shop/fertiliser/liquid-gold-unique-complete-fertiliser/   Gotham Greens FresH2O Growers Thanet Earth The Green House Ely The Green House Sussex Village Farms International Vertical Harvest Farms Eden Green Technology Plenty AeroFarms GoodLeaf Farms Just Vertical ZipGrow Harvest Today Freight Farms Smallhold Elevate Farms Raiz Vertical Farms Eden Grow Systems Homer Farms Growponics Ltd. Novagric Greener Crop Inc. Levo International Bowery Farming BrightFarms Kalera Infarm Crop One Holdings Iron Ox 80 Acres Farms Green Sense Farms Sky Greens Agritech Nordic Agricool Agrilution Systems Autogrow Systems Green Spirit Farms Farm.One Nordic Harvest SPREAD Co., Ltd. Pure Green Farms Red Sun Farms Eurofresh Farms Swiss Leaf Farms Planet Farms Future Crops Urban Crop Solutions Infinite Acres NatureFresh Farms