| Line 3: | Line 3: | 
|  |  |  |  | 
|  | ===Materials=== |  | ===Materials=== | 
| − | <h4>Gravel storage layer</h4> | + | <h4>Underdrain</h4> | 
| − | {{:Gravel}} | + | {{:Underdrain}} | 
| − | <h4>Underdrain pipe</h4> | + | <h4>Planting medium</h4> | 
| − | {{:Pipes}} | + | {{:Biomedia}} | 
| − | <h4>Geotextile</h4> | + | <h4>Plant list</h4> |