alright well after having to deal with crappy computers for the past 10 years i've decided that i'm going to build a computer that will actually work well hahah. So while i was at it i decided that i would water cool it as well. To just give you a little background on what i have going, i'm making my own water blocks out of pur aluminium block. which leads me to my first question, is 3/16" pipe to small for water cooling? what is the smallest pipe size that i could use that would not drasticly decrease water flow and reducing cooling abilities? aight and then next i had a question about a pump. I've been looking at "Computer Water Cooling" pumps...and i have to say they are ridiculously priced...so i was wondering if maybe there was a cheap one...not bad....but nothing extreme....like below $60usd though, that i might not have stumbled upon on yet. or maybe is there anyway that i could use an aquarium pump? The lowes near me has pond pumps...which would be pretty beastly...but the only problem is that they are meant to be submersed in the water so the intake isn't a tube, it's a massive opening with a filter....i was thinking maybe i could make a miniture resovoir that would connect directly to this portion of the pump and then have a fitting that is the same size as the rest of tubing on the other end of the mini "resovoir"? aight well that wraps up what i have going so far...thanks for the help to come!