Thanks PE I did a quick "coins on paper" test and it was clear that cyan fog was produced very quickly at reasonable light levels. It looks as if I need to re-appraise safelight levels and be prepared to operate in much darker conditions.
Pity. The Nova Quad has some advantages over Jobo drum processing but putting a print into a Jobo drum in near total darkness is easier than using the Nova.
Maybe I just need more practice in near dark conditions