| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a water tank for aquarium fish which can prevent displacement of, e.g., the heating unit of an electric heater placed as an underwater device in water in the body of the water tank and has beautiful appearance. <P>SOLUTION: A filter-housing space 6 is made in the water tank body 2 of the water tank 1. The filter 20 is housed and placed in the filter-housing space 6 to be taken out in a state in which at least the lower part of the filter is soaked in water 40 in the water tank body 2. Between the filter 20 and a space-forming wall 6A forming the filter-housing space 6, a first passage 51 comprising the space between both 6A and 20 and through which the electric power cord part 61b of the electric heater 61 is passed is formed. Moreover, one end opening 51a of the first passage 51 is arranged at a position downward of the water surface 41 of the water tank body 2 so as to face the inside of the water tank body 2, while the other end opening 51b of the first passage 51 is arranged at a position upward of the water surface 41 in the water tank body 2. <P>COPYRIGHT: (C)2013,JPO&INPIT |
