Wow, I keep my starsan in a 4 gal bucket for a couple weeks and its still clear as day. I only change it depending on the pH or just the use, lots of use and ill change it just because it gets stuff in it. Could also be the container that you are storing it in, starsan is mildly corrosive, if you have a really weak container that could be the issue.
Secondary: 10gal-Double IPA, 5gal-Pure Apple Cider,
Kegged: 10gal-Christmas Ale, 5gal-Hopped Up Stout, 5gal-Light Rye Ale, 5gal Dunkel Bock
Bottled: DFH 120 Clone (Kicks your A$$)
"Brew happy, brew often, and always brew with friends." -Me
"I dont home brew because I'm poor, I'm poor because I home brew!!!" -Me
"If I ever leave this world alive ill be drinkin up in the sky, with you my friend by my side" RIP B.G.
And always remember friends "Do NOT set yourself on fire"