Growing systems and kits encompass the physical infrastructure of hydroponic production — from complete turnkey systems to individual components like channels, reservoirs, and grow trays. The suppliers listed here serve commercial growers building or expanding NFT, DWC, ebb-and-flow, and vertical rack operations. When evaluating a systems supplier, start with material quality and sizing — commercial channels and reservoirs need to handle continuous use without degrading under nutrient solution exposure. Ask about system configurability: most commercial operations need layouts customized to their facility dimensions, not fixed consumer-grade kits. Lead times and freight costs for bulky equipment can significantly affect project timelines and budgets, especially for multi-site buildouts. Look for suppliers that offer engineering support or layout consultation for commercial installations, and confirm their systems are compatible with your preferred irrigation and environmental control hardware. Volume pricing and account terms are especially relevant for growers scaling across multiple grow rooms or facilities.