yes it goes away but it takes awhile if you want i highly reccommend getting nassarius snails they help eat the diatoms and clean the glass, turbo snails are pretty useless if you ask me for just about anything, theyre a waste of money, but nassarius is the way to go. also- warning- dont get a sand sifting star. everyone tells everyone to do this, but they eat all the beneficial microfauna out of the sand bed.
GOOD LUCK