wanted to know how you guys clean your water cooling system? do you take the whole system out? or do you just undo a tube into a bucket and start the pump so that all of the liquid comes out, just wondering bc i am about to start a project where i test 4 differatn coolents and might reconsider if you havve to remove the water block and everything each time that I change liquids...so if a couple of you could share with me how you do it that would be great....