I am building my first mash tun and I was told by someone that I would also need to stuff additional filtering material inside the ss mesh to filter out the grist. My understanding is that the vorlauf would take care of the first bits of grist and then it would run clear. In case it helps, I ordered the ss mesh tube from bargainfittings.com since I was ordering my ball valve kit from there too. I am planning on just connecting this mesh tube up to the coupler inside my 10gal rubbermaid cooler and going to town. Anything I am missing?