Thanks a lot Leeum I might do it for the overall looks, but it isn't necessary because those tubes won't come off unless i pull has hard as I can. hehe that's right. but it won't be visible because of the door. I don't really see why i should do that? because the way I have it now, both of the hdd's get the same temp on the water.. and since the diameter inside the block is 1/4" and I am using 3/8", they they won't slow down the flow too much. Btw. My temps are (idle): cpu 24, NB 25, hdds 29-31 (they are wrapped in noise dampening mats). I don't know the temp on the gfx card, because i can't get the temp probe inside the square surounding the core.