Vinz Clortho - the Keymaster of Gozer the Gozerian
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Join Date: Mar 2011
Location: St. Petersburg, FL
Liked 276 Times on 222 Posts
Likes Given: 17
Not a very good picture, but 99% of the time, little white floaties are yeast rafts. Perfectly normal and no big deal. If the beer smells or tastes sour, then you have to start thinking infection, but as long as it smells fine and your hydrometer sample tastes kinda like beer, you are good.
As far as the filter, yeast typically range in size between 1-3 microns, so you really want to use a 3+ micron filter if you are going to filter your beer. You will likely have carbing issues with a 1 micron filter. The pros recommend using a 7 micron filter followed by a 3 micron filter.
Why are you filtering it? You realize you are going to have a yeast cake in your beer no matter what if you bottle. It's necessary to carbing and conditioning.
I can see filtering a kegged beer, but there's not much of a point to filtering a bottled beer, IMO. There are easier ways to achive clarity.
Primary #1 - Summer Hopped Hefeweizen
Primary #2 - EMPTY!
Primary #3 - EMPTY!
Secondary #1 - Downtown Flanders Brown (Due June 2013)
Secondary #2 - Pinot Noir Wine (Due December 2013)
Keg #1 - Bavarian Pilsner Ale
Keg #2 - Hard Cider (Spring SeaCider)
Keg #3 - Centennial Blonde
Bottled - NONE!