Nice going!....

TIP:
A thing that all guys that are testing Peltiers to take care off for BETTER temps is:
The screws that are holding the cold cooper with the hot cooper (waterblock) MUST BE MADE OF PLASTIC not to transport temperature from the cold surface to the hot surface and visa-versa.
By screwing those two plates with metal screws, you're LOOSING a LOT of peltier's efficiency....
Keep this in mind....