So I had my hefeweizen in the primary (bucket) for a week, open it tonight and took an FG reading, looked good 72.9% apparent attenuation and looks good except it is REALLY dark, so I decided to rack to secondary. On Saturday I went to my LHBS and bought a Better Bottle (5 gal) and an autosiphon.
Last night I filled the Better Bottle with water to try out the autosiohon. Followed the directions, everything seeded to work well.
Today I disconnected everything, sanitized, and proceeded to siphon. It took me a while to get the flow started, once started it quit about half way through. I could not get it restarted. After 10+ minutes of try i finally got it started and was able to get it all out.
In the process I introduced a lot of air into the carboy. How much air before I need to worry about oxidation? Oh well, we'll see what it is like in a week or so.
I think my problem is that I have the wrong size tubing (I guess it is 3/8, should have 5/16). When it worked last night I thought it was correct. After this happened, I searched here and there was a thread almost 2 years ago about this problem (wrong tube size). I bought it because I had heard all good things. Just though I would start this thread topic (again) for anyone that is about to get an autosiphon. Check the tube size!