Air from the outside is better but having such a long extension takes quite a bit of scfh away. Anyhow, here's my last 48hrs of skimmate. The cups are 23oz cups so its just a bit over 3cups. I'll be honest, its awesome skimmate but it doesn't smell like sewage like my last skimmer made it smell. But its the same color and also much easier to tune! Here ya go
Luke