1. Lifespan of the heater: It is recommended to replace ordinary heaters after about two years of use, because the internal bimetallic strip may malfunction over time. Since they are not very expensive, replacing one gives you peace of mind and avoids unnecessary losses.
2. Which is better: glass or stainless steel? It's hard to say; each has its own advantages. Glass heaters are generally inexpensive (except for some special processes), widely used, and can be applied in various aquariums. The downside is that they are easy to break. If used in large fish tanks, they must be equipped with a protective cover to prevent fish from breaking them. The advantages of stainless steel are obvious: sturdy, durable, and visually appealing. However, the disadvantage is that they cannot be used in corrosive environments, such as saltwater tanks.
3. Quality: In fact, domestic ones are sufficient; there is no need to buy imported ones, such as those from Jia Bao or Chuang
