Ah OK I thought so.
Would that even help?
Maybe you could remedy the situation without resorting to sulphur burner or sprays. They look beautiful at the top canopy.
Perhaps remove the affected lower leaves. Try to get air movement over the plants, including for a period after lights out if/when foliage can get wet. Vent out the humidity and replace with drier air if possible.
Probably be helpful to screen your pots, roots and trays with a cover of plastic film or something. That will block light onto your roots, and help keep rootzone moist, and maybe lower overall humidity.
I have only seen it when I ran out of space and vegged plants in a corner. They experienced low lighting levels. And high humidity after lights out, with little ventilation. My limited experience, but once I got the plants into better ventilated space with lower humidity - they grew out of it.
Your plants look so nice up top. If you cut your photo in half, its like two different images. Happy healthy upper zone. But down below, needs a little help.