| 摘要 |
PROBLEM TO BE SOLVED: To provide a height maintaining device for the liquid surface in a storage vessel, capable of maintaining the liquid poured into the storage vessel at a desired liquid level. SOLUTION: This height maintaining device 20 for the liquid surface in a storage vessel, is equipped with a planter 10 capable of storing a culturing water 11, a discharging hole 30 capable of discharging the culturing water 11 to the outside of the planter 10, a tubular member 40 capable of being confirmed by a sight and connected to the discharging hole 30 and a holding means 50 capable of holding the tubular member 40 along the side surface 10D of the planter 10. The height maintaining device 20 has an open end part 41 as the upper portion of the tubular member 40 made as vertically transferrable in order to set the culturing water at a desired water level. |
