| Line 3: | Line 3: | 
|  |  |  |  | 
|  | ===Materials=== |  | ===Materials=== | 
| − | <h4>Gravel storage layer</h4> | + | <h4>Gravel reservoir</h4> | 
| − | {{:Gravel}} | + | {{:Reservoir gravel}} | 
|  | + | {{:Pea gravel}} | 
|  | + | <h4>Geotextile</h4> | 
|  | + | {{:Geotextile}} | 
|  | <h4>Biomedia</h4> |  | <h4>Biomedia</h4> | 
|  | {{:Biomedia}} |  | {{:Biomedia}} |