JackNaylorPE :
1. Be aware that even a 2 x 120mm CLC type liquid cooler will not provide cooling as good as an air cooler which costs 60% as much.
2. But no, you do need a bit more room than a 120mm fan takes up to allow for the hose connections
3. The link to the NZXT 220 that one would expect to have this information is 404'ing. Check there if it comes back up
What do you mean 2x120mm i have a 240 rad and my temps are way below what they were with any air cooler.
And i got my aio on sale for 65$ i also had a rebate. and you could just put a 120 rad on any 120 fan it wouldnt really matter as long as you have the proper space and you could definetly fit a 120 in the 220