Just for an update. I doubled my GPH to rougly 60gph. Showed 0 increase or drop in temps. I also switched over to my heater core. Getting the same water temps though I I am now only using 1 120mm fan instead of two. Room temp 25.5C, water temp 30.1C, and CPU temp 38C load.
Now note my testing is based off of unscientifically advanced measurment systems! I use a 1 gallon jug and time it a few times. Also I use thermisters for the temp reading. Sorry if this is not accurate enough. This is how I based my probe accuracy.
http://www.custom-cooling.com/temptest.html
Note this was with NO air movement around the socket at that will give false reading. Also the numbers in that test are not the setup in this post.