Forget about the iceprobe, it will not do anything for your temps. I have seen many many people attempt to chill water with small peltiers and it never works. Not saying it can't work... but to get decent results you will need several high powered peltiers and they will neeed to be water cooled as well (dual loop). Chilling with peltiers is very ineffecient. Peltier chillers are used in industry for process chilling but are not practical for PC cooling hobbyists..
SSCooling sells high powered peltier chillers.