If you're using it with fluorescent lights on, turn them off and find another light source. I agree with 2fast2furious, get the light kit. If there's an IR light option for those, that might be the best option and worth the extra $. But, I'm not sure if there's an IR light kit option. Honestly... I'd advise you to think about getting into a different crony in the future. Of all the models I've had, I experienced the most difficulty with the Beta, while I had it. I wish you the best of luck. Incandescent lights should help you to achieve results. I've also seen home made light kits that shooters have made using inexpensive Harbor Freight LED lights. That might be an option for you as well.
Tom