When I did it back in 95, with a kit from Worms Way, an Aquarium/home made box to work in ect. No carpet, no curtains in the bathroom, completely sterilized with Lysol, and also spraying the air to keep down dust.
You shouldn't have any kind of cloth, carpet, curtain type materials within 500 miles of the operation. That shit = dust/mites/mold. All 3. All surfaces completely wiped down. I put Sarah Wrap all over myself, and sprayed it down with Lysol. DRIPPING ect, and every step you were constantly spraying down with Lysol.( Don't forget to sterilize the sprayer. ) If you blinked your eyes, you sprayed… joking of course, but its all about sterile, nothing floating in the air, using an enclosed box ect, sterilized, if 1 does use use aluminum foil, Im sure its sterile. I wrapped myself in Saran Wrap , and sterilized it before wrapping, and after.
If ANYTHING, more simple than the plant tissue gets in the Agar/Medium. Its done.
Also the UV coming out of a Fluro, is nothing, as the glass takes out any UV that may be produced.
You have to have really, really good glass for UVA/UVB Bulbs.