If you have this container in the refrigerator with your keg, do not turn down your control to acquire a colder bath. Hopefully the 38 f beer temperature will maintain the same temp. in your bath and this will be sufficient in maintaining your Beer temperature.
Assure that your beer line is in contact with the glycol loop every inch of the route from your refrigerator wall to the back of the faucet. If you are using CO2 at 14 PSIG at 38 F at sea level and your run length is 13' with 9.5' lift between the bottom of the keg and the faucet, use the 1/4". Preferably splice a a half foot of 3/16" to the 1/4" at the faucet end.
Scott Zuhse, Instructor
Micro Matic Dispense Institute