So I have a 200gal that has been setup & running for over a year now. About once a week I keep getting this cloudy white flim all over the glass. It looks like a bunch of tiny white strings up close. My tank starts to smell & when I clean the glass off the smell gets worse for about a day then goes away. I am guessing that this is bacterial but don't know why it keeps coming back. I am currently running a fx5 full full of chemi-pure & bio rings along with a 405 with bio rings & carbon. Is there something wrong with the way my filters are setup that is causing this?