Tracy, I did hold my hand over the vent stack, and there less suction than I had hoped for. Highflyer called last night with some recommendations, so I'll change some things up and repost the changes. My head spins when he fires his big brain up, but it was something about velocity, and pipe diameter while eating pie. I might have been distracted when he said that though.
He's helping me run some carrying capacity tests later this spring, and he's bringing his DO meter with him. We should get some solid numbers then.
