I just started a cycle about 10 days ago. I filtered all my gear with 45 micron filters. Now I'm reading alot about the possibility of staph spores getting through filters of this size. How much of a concern do the experienced here think this is? Is the risk real enough that I should go back and refilter all my gear through 20 micron filters? I'm not sure how quickly I could find the filters considering the shortage that's going on and I'm already into my cycle.