I would be interested in seeing a similar study done for the different types of carbon, wood, coal, lignite, and coconut shell. Also, makes me wonder if you have the carbon bag somewhere closer to the feed for your skimmer, would that be better?
Anything you still need for 2 people, we will be there till at least 2 o'clock. Sorry for not volunteering sooner, wasn't sure what time I was going to show-up.
My office is on Broadway in Burlingame, lots of foot traffic. Also, not sure if you would want it but I could probably get it up at the Starbucks and the local coffee shop.