How much coverage does one of the black lights give(48 inches) ?

Question

Im getting my own room and I'm gonna have black walls with florescent green splatters or shapes so I'm getting a normal light for a day and black light for the night the room size is normal. 4 walls its a square room each being about 14 feet long is a 48 inch black light enough for my room if not is a 48 inch and 2 1 foot black lights to much

Answer 1

You want a black light for a nightlight, so you don't fall over yourself going to the john, or are you expecting to read by the light?  Forget the latter.  A friend in the '60's had one in his half toilet, and you could see what you needed to.  It was the first blacklight I'd seen in use and - well - it was effective.