PROBLEM TO BE SOLVED: To provide a hydroponic device for household or business use which can be used without using liquid fertilizer in only an aqueous solution with which germinated garlic having high nutritional value can be eaten in about 4 to 6 days.SOLUTION: The hydroponic device comprises a buoyant material, a garlic planting part 1 and a cover case 2, and is used with the garlic planting part 1 being attached to the cover case 2. Garlic with peeled skin is inserted into a garlic insertion port provided in the garlic planting part 1 attached to the cover case 2 and floated in a container containing the aqueous solution for cultivation.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2019,JPO&INPIT【課題】家庭や業務用として使用でき、液肥等を用いず水溶液のみで簡単に栄養価の高い発芽ニンニクを約4~6日で食せることができる水耕栽培装置を提供する。【解決手段】浮力ある素材で構成された、ニンニク植え込み部1とカバーケース2とで構成され、ニンニク植え込み部1をカバーケース2に装着して使用するものであり、カバーケース2に装着したニンニク植え込み部1に設けたニンニク差し込み口に皮を剥いたニンニクを差し込み、水溶液の入った容器に浮かべて栽培する構造とした。【選択図】図8