Do I need to protect fluorescents on grow shelf?

[WillisWill]

Hi

I've recently constructed a grow shelf using 48 in fluorescent lights, and enclosed the shelf in 6 mm plastic. I want to put a humidifier at the bottom of the shelf, if it's running intermittently so humidity stays around ca. 50-60%, am I running an electrical risk if I don't enclose the lights? They'd be about 3-4 ft from the humidifier?

Thanks