Overflow/recovery/puke tank

This is my setup for a recovery/overflow bottle. This was an aluminum Mountain Dew bottle that was put out last year that I held on to because I knew it would be useful someday. The top line comes from the radiator and goes to the bottom of the bottle. The bottom line goes up through the bottle and ends a few inches shy of the top. This will allow coolant to be recovered but overflow if it begins to fill too much.