Quote Originally Posted by desone View Post
Just one more piece of advice. Don't run the peltiers without the pump running.

That waterblock will freeze very quickly, as there is only a small volume of water. Remember ice expands and can easily damage your cold waterblock.

You should keep the cold side water volume in the system to a minium. That way it will be more efficient.

If you keep good airflow inside your computer case, condensation will not be a problem.

You could run the water through say a 120 mm radiator and fan and use it to cool the air inside the whole case. That way everything is cooled down.
Good point about freezing the block - if you are using a remotely controllable PS (like a converted ATX PS) you can switch the TEC supply on when the pump runs, and it is fairly easy to also shut it off if the cold side temp gets below a safe level.