So, as I go into more and more research on a custom desk pc, I've noticed one of the most expensive things about watercooling... the pumps.
Now what I want to know is a Submersible pump a cheap alternative? As Alex said here: "you could probably get a pump off of Amazon for $22." or something like that. I would plan to make some 3d printed adapter for the submersible part of the pump. This pump on Amazon (https://www.amazon.com/Homasy-Submersible-Fountain-Aquarium-Hydroponics/dp/B01LHC8UX8/ref=sr_1_8?crid=15182RWPDOCU5&keywords=submersible+water+pump&qid=1555283381&s=gateway&sprefix=submersible+%2Caps%2C146&sr=8-8) is $24 USD and has around 1500 liters per hours and headroom of only about 2.1 meters of headroom. According to this (https://www.ekwb.com/blog/which-pump-should-you-use-d5-or-ddc/) d5 pumps have about the same lph but 3.9 meters of headroom. How much does this impact performance?
PS: I know there is no PWM controller and it plugs into the wall.