PROBLEM TO BE SOLVED: To provide a hydroponic device capable of easily changing the water level of a culture medium in a cultivation trough.SOLUTION: The hydroponic device of the embodiment has a cultivation trough, a growth body holding section, a water supply section, a drainage section, and a water level adjustment tube. The cultivation trough stores the culture medium. The growth body holding section holds the plant to be cultivated at the top of the cultivation trough. The water supply section supplies the culture medium to the cultivation trough. The drainage section is formed on the bottom of the cultivation trough, and discharges the culture medium from the cultivation trough to the outside. The water level adjustment tube is detachably fitted into the drainage section and has an opening communicating with the upper space of the cultivation trough. The water level adjustment tube discharges the culture medium exceeding the predetermined water level in the cultivation trough to the drainage section through the opening.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】栽培桶の培養液の水位を容易に変更することができる水耕栽培装置を提供することである。【解決手段】実施形態の水耕栽培装置は、栽培桶と、生育体保持部と、給水部と、排水部と、水位調整筒とを持つ。栽培桶は、培養液を貯留する。生育体保持部は、栽培桶の上部で栽培する植物を保持する。給水部は、栽培桶に培養液を供給する。排水部は、栽培桶の底面に形成され、栽培桶から培養液を外部に排出する。水位調整筒は、排水部に脱着可能に嵌入されるとともに、栽培桶の上部空間に連通する開口部を有する。水位調整筒は、栽培桶内で所定水位を超えた培養液を、開口部を通して排水部に排出する。【選択図】図1
