气泵（水族箱或隔膜泵）是一种将空气通过浸没在水培营养液储液罐中的气管和气石的装置，产生细小的气泡，从而提高溶液中溶解氧的水平。充足的溶解氧对于健康的根部呼吸和防止导致根腐病的厌氧条件至关重要。气泵是 DWC、RDWC、Kratky 混合型以及任何基于储液罐的水培系统中的关键组件。
关键事实
- Sized by output in L/min or L/hour — match to reservoir volume (aim for full turnover every 30–60 min)
- Use air stones (diffusers) to break air into fine bubbles — finer bubbles = greater surface area = more DO transfer
- Multiple air stones improve coverage in large reservoirs
- Air pump failure is a leading cause of acute root rot — always keep a spare
- Elevate the pump above the reservoir water line to prevent back-siphon if power is cut
- Noise can be reduced with rubber feet or foam mounting pads