For filtration how many "Microns" in size you recommend to remove
grain sediments and hops sediments?
I find this people how make stainless steel filters:
http://arborfab.com/105-X-5-5-Gallon-Extreme-Bucket-Filter-with-4-Tabs-and-Side-Supports_p_28.html
In difference size (Microns) , for...