123 Planting box

What's the size for planting box? The basic unit size is 40 x 40 x 22 cm, it could assemble in two tiers, three tiers, or as high as you need. It could also assemble in corner, save space in balcony / garden. 

How to assemble planting box? 1. To fit wheels into tank2. To fit side panels into tank3. To fit pillars to connect side panels and Tank4. To fit decorating caps to pillars5. To fit decorating straps to side panels6. To fit cotton to gauze pad7. To put gauze pad on tank8. To fill nutrient soil in to planting box and keep one end of cotton out of soil.Remark: To Absorb water from tank automatically by cotton