The Hydrator was a device developed by Ohnes scientists to enable their explorers to remain out of water for longer periods of time than their body would normally allow. The device itself includes a salt-water tank which was connected, by a series of small hoses, to a module designed to oxygenate the water stored in the tank. By wearing the Hydrator around their necks, as well as connecting the hoses to their gills through adapters built into the device, the Ohnes were able to breathe the water held in the tank. Though the device did not last forever, it was able to oxygenate the water stored in the tank for up to five days without it needing to be replaced with fresh water. (RPG: "Fantastic Frontiers: Stargate Season One")
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| Individuals | Kel • Nem • Omoroca |
| Planets | Oannes |
| Technology | Hydrator • Memory alteration technology • Memory retrieval technology • Sonic pistol • Sonic rifle |
| Terms | Ohnes language |