如何选择合适功率的加热棒？
How to choose the right power heating rod?
功率的选择主要结合室温、水体大小、气流（是否加盖）等因素。通常来说，一升水配0.8-2.5w加热棒。室温与预设温差较大时（如冬季），应配较大功率（1.5-2.5w/L），同时做好保温措施；室温与预设温差较小时（如夏季），可配较小功率（0.8-1.5w/L），用以预防昼夜温差变化。（均为经验值，具体情况还需具体分析）
The selection of power mainly combines room temperature, water body size, air flow (whether covered or not) and other factors. Usually, a liter of water with 0.8-2.5w heating rod. When the difference between room temperature and preset temperature is large (e.g. in winter), a higher power (1.5-2.5w/L) should be provided, and insulation measures should be taken. When the difference between room temperature and preset temperature is small (e.g. in summer), a smaller power (0.8-1.5w/L) can be allocated to prevent the change of temperature difference between day and night. (Both of them are empirical values, and the specific situation needs to be analyzed in detail.)