EGFM is available in three grades of media. All grades are milled down and are sharp free.
| Grade 1 |  | Grade 1 (0.5mm – 1.0mm (16/30)). This is the equivalent to 16/30 filtration sand. |
| Grade 2 |  | Grade 2 (1.0mm – 3.0mm). This acts as support media. |
| Grade 3 |  | Grade 3 (3.0mm – 7.0mm (pea gravel)). This also acts as support media. |
