The set caused problems for some of the actors, since it was created from a set of lights and CG area. Whenever they turned their heads, the lights seemed to move, making them feel sick.
John Brumpton returned to Farscape after playing B'Sogg in the gory Season 2 episode "Home on the Remains."
Dave Elsey wanted to give the character of Katoya special lenses as part of his make up, but actor John Brumpton had an eye infection during filming and was prevented by the Unit Nurse from using them.
If you look closely at each of the Charrids that appear on Farscape, they all have initials on their foreheads. Notably in this episode, there is "AP" for producer Andrew Prowse.
The title "Mental as Anything" comes from the name of the band whose lead singer designed the original Mambo shirts, as worn regularly by Farscape's producer Ricky Manning.
The opening scene with John and Aeryn was a late addition to the script, to help to explain why only the men were going to the planet, and also to introduce the television set which Aeryn had bought John as a Christmas present.
David Kemper recalls that some of the writers were in favor of revealing that actually D'Argo .
The light ball within the arena was added by the visual effects department after the episode had been edited.
Although strictly speaking, in the flashback sequences, D'Argo should have looked like he did in the first season, there was insufficient time to go back and recreate that look.