all water cooling loops are closed and sealed, not sure if you've seen this sticky http://www.tomshardware.co.uk/forum/277130-29-read-first-watercooling-sticky
but its really helpful for starting out
Thanks for the link! I'll read more of it later.
Sorry I was being misleading.
I kind of meant, is it possible to make something like a Corsair H100 or NZXT Kraken?
I really don't want to deal with reservoirs and all that fuss.