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āĻŽā§āϞ āϤāĻĨā§āϝ
- Nutrient solution is recirculated rather than discarded â lower water and fertiliser consumption
- Examples: DWC, RDWC, NFT, ebb-and-flow, Dutch bucket with return lines
- pH and EC must be monitored daily â concentrations change as plants absorb differentially
- Pathogens spread rapidly through recirculating systems if root rot takes hold
- Full reservoir change every 7â14 days prevents salt and pathogen accumulation
- Requires a return drain from growing channels back to the reservoir