Im building a computer and id like to get a liquid cpu cooler, would i have to change the liquid inside the cooler after a certain amount of time? Also this is the one im thinking about getting http://www.amazon.com/Cooler-Master-Cooling-Heatsink-Radiator/dp/B009SJR3GS/ref=sr_1_1?ie=UTF8&qid=1372290828&sr=8-1&keywords=Cooler+Master+Seidon+120M+Liquid+Cooling+System+120MM+Radiator