| 摘要 |
PROBLEM TO BE SOLVED: To prevent defective raising of aquatic small animals or water plants due to reduction in water temperature in a water tank by installing a power source lamp together with a feeding lamp and displaying a state incapable of feeding a commercial power source to a heater due to the separation, etc., of a power source plug socket. SOLUTION: This heater for raising a water tank organism is obtained by installing a power source connecting lamp LED1 and a feeding lamp LED2 in a feeding circuit 3 for connecting the heater 2 and water sensing elements 9 charged into the water tank for use to a commercial power source 1. Thereby, the feeding conditions to the heater in a lit state of the feeding lamp LED2 is visually recognized and the connecting state of the feeding circuit 3 to the commercial source is visually recognized in a state of the lit power source connecting lamp LED1. |
