According to Theo Nischwitz, the principal chief of special effects for this series who was an acquaintance, all effects were photographed & rendered in 35mm black & white Agfa stock with the single exception of those scenes in the starlight casino which contained the enlarged Berlin aquarium fish floating above and in background of the underwater base. - For those the standard blue screen effects of the day were used by draping blue cloth behind all window openings of the set and as such color stock had to be used in order for the FX team to be able to add those fish later from separately shot stock footage. Contrary to popular belief the enlarged fish were not a mistake but rather a deliberate decision in a nod to a post-apocalyptic setting.
What seems like a fairy tale today may be reality tomorrow. Here we have a fairy tale of the day after tomorrow. There are no more national states, only mankind and her colonies in outer space. We settle on stars far-off, the bottom of the sea is ...
You can see two crewmembers in the fifth episode "Kampf um die Sonne" (Translation: "Fight for the Sun"). You can see them in the scene when the "Lanzet"-shuttle of the "Chroma"-people crashes. They were not fast enough to duck behind the shuttle. Actually both should only destroy the shuttle with a pair of wires.
If you're in the mood to rock out and laugh, here are five fan favorites.