Hi, I want to get this casing. LINK
And I also want to include water cooling for this. I know is possible cox I saw this

So, is all water cooling same? I simply grab one and can fit already?

C-Zone have this casing listed in their price list...

don't just see pictures only...
read the casing spec...
it already states it has ports for external water cooling...

there as two types of water cooling...
external... the radiator sits outside the casing...
internal... the entire water cooling kit fits inside the casing... if your casing have enough space...