Hello wingtip25 ans welcome to 420magazine, Voltrom did you read a review or something that suggested that system wasn't light proof? even thou logic would say it should be black it might be thick enough to block or nearly block all the light out, good test to get some idea is to turn on your brightest light and look at the bottom of the bucket. If it isn't doing the job wrap the whole thing in black duct tape.
To answer your original question I would need to now more about your set up, what size area, what lighting etc... also a word of advise we love pictures on here, makes it easier to give more accuracy to our answers.
I can be here to guide you as much as i can mate so feel free to ask lots of questions.