Just got the stainless steel Big Berkey yesterday and tried it for the first time this morning. It took 5 hours to filter 2 gallons of water so I'm going to purge the 2 filters again to see if it filters faster. I got the system with 4 black Berkey filters but only installed 2. This system is very nice looking and the wife was impressed. I had a new well drilled over a week ago and the spigot water is still not clear. Ran it thru the Berkey and it came out crystal clear.