I tried a search but didn't find anything so here's my question. Would it be safe to use my mash tun to soak my bottles in starsan? The reason I ask is because I currently have over 100 bottles soaking in pbw using my mash tun ferm bucket and a second cooler. And I wanted to use the same vessels to sanitize in. I'm just worried since my mash tun has held grain it can cause a bottle infection. Also is star San still no rinse even if the bottles will sit for over a day?