Birna's studio is getting pretty chaotic in the duckweed "season". Here is a make-shift setup for shooting duckweed flowers in UV. I reached 4.4X magnification using the UV-Nikkor 105mm f/4.5 combined with a reverse-mounted Noflexar 35mm f/3.5, which had to suffice.
A snapshot of a corner with the AW1.