Tracklist
| Hydro 1 "Elementum" | 14:25 |
| Hydro 2 "Regina Maris" | 2:55 |
| Hydro 3 "Pax" | 3:26 |
| Hydro 4 "Profundus" | 21:11 |
| Hydro 5 "Fluctus" | 5:03 |
| Hydro 6 "Matrix Maris" | 2:53 |
Versions
| Category | Artist | Title (Format) | Label | Category | Country | Year |
|---|---|---|---|---|---|---|
| TUXCD 5044 | Neuronium | Hydro (CD, Album) | Tuxedo Music | TUXCD 5044 | Switzerland | 2001 |
| CXCD 245 (CS) | Neuronium | Hydro (CD, Album) | Konga Music | CXCD 245 (CS) | Spain | 2000 |
| VE 15183 CD | Neuronium | Hydro (CD, Album, RE) | Valley Entertainment | VE 15183 CD | US | 2004 |
| ANIMA003 | Neuronium | Hydro (CD, Album, RE) | AnimaMusic | ANIMA003 | Spain | 2007 |
