I have a normal flouresent tube in my vivarium which is 1.5 foot (viv is 4foot). It is attached to the top at the back and has a fully heatproof plastic cover on it. I just wondered if this normal light is ok. I did research before i got it and was advised that it was ok but it seems other people have red and blue lights etc. I have it on a timer and it comes on between 2.30pm and 11.30pm. It is just for effect and only gives off a tiny amount of heat (viv alters about 1F). If its ok then i dont plan on changing it but any advice would be great as i dont really want to leave it there if its unsafe for my snakes.