、Heater Rod Price
1. Lifespan of heater rods: It is recommended to replace ordinary heater rods every two years, as the internal bimetallic strip may malfunction over time. Since they are not expensive, replacing them 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 advantages. Generally, glass ones are inexpensive (except for some special processes) and widely applicable in various aquariums, but they are fragile. If used in large fish tanks, they must be equipped with a protective cover to prevent damage by fish. Stainless steel ones are obviously sturdy, durable, and have a nice texture. However, they cannot be used in corrosive environments, such as saltwater tanks.

3. Quality: Actually, domestic ones are sufficient; there is no need to