< Topic >The necessary time for each tank uniformly, the roof hydroponics device which can supply the water is offered.SolutionsThe hole of several places is bored on the middle of the vinyl tube as a roof hydroponics device, multiple through the vinyl tube which minds the rubber plug to the bond tube from supplying tank lower part in the cultivation tank and inside was bonded the tube which bonded cultivation tank lower part.< Choice figure >Drawing 1【課題】各水槽に必要時に均一に、水を補給することができる屋上水耕栽培装置を提供する。【解決手段】屋上水耕栽培装置として、複数個つないだ栽培水槽ならびに栽培水槽下部をつないだ管の内側に補給水槽下部からのつなぎ管にゴム栓を介したビニル管を通し、ビニル管の途中に数か所の穴を開ける。【選択図】図1