I understand everything you have said but I don't have a accurate way to compare my water temperature to my ambient temperature. Each of my fans pushes close to 330cfm and and creates more pressure than a normal axial fans because it is 7cm thick.I guess two of these cores with two of my fans would be enough to remove a heatload of 200 Watts and still keep the water temperarture close to my ambient temperature.
Btw what is an accurate and cheap way to measure your temperatures?
