just remember that if your plant is exposed to even the smallest bit of light during its dark hours it could go hermie on you

i always suggest making a growbox of some type or converting a closet

double check your light.. UVA is beneath violet on the spectrum... the complete opposite end of the spectrum as red... if your light does indeed put out UV-B AND high emissions in the 650nm (red) range then i would be very interested in the type/ brand name on it, since i have only seen UV-B lights in blue, and due to thier effect on trichromes they are best used during flower.. .which would make a red one much better

the attached pic is a spectrograph for the exo-terra light that i use (repti glo 8.0)... you can see the UVB & UVA, the peak output is in the blue range, with a tiny bit in the red range.... all the UVB lights that I have came across have been very similiar