Best Hydroponic Systems for Lettuce: NFT vs DWC vs Kratky
Home » Hydroponics » Best Hydroponic Systems for Lettuce: NFT vs DWC vs Kratky Last Updated: August 08, 2026 | Reviewed for accuracy, clarity, and safety Quick Answer: The choice between active recirculating systems and passive tanks involves trade-offs between labor efficiency and risk management. NFT systems allow automated commercial channel flushing and dense gutter spacing, maximizing plants per square foot. However, because roots reside in a shallow 1–2 mm water film, pump failures cause complete crop desiccation within 2 hours. DWC systems hold hundreds of gallons of nutrient water, protecting crops against power outages for days. ⏱️ Time: 30 Minutes 💪 Difficulty: Beginner 💰 Est. Cost: $50 – $150…