Comment by progval

> why do hydroponics always seem to involve indoor/UV lighting?

Hydroponics and artificial lighting increase density (no/less volume wasted by dirt, and can stack plant beds on top of each other). UV lighting is more power-efficient artificial lighting, so it's the next logical step.

And if you grow plants indoor somewhat densely, they'll leave your apartment in constant semi-darkness if you rely on sunlight. I have this issue with my basil and cherry tomatoes, for example.