My sisters iMac=>PC mod is going to wait because her hdd died and I had to buy a new one, so now I'm short for money After that stupid intro lets go to the problem. I came into possesion of a WB and a heater core (for free) and now I want to dip into the waters of water cooling. Here's the problem: I want to build a WC setup, but I'm limited to space inside the case, because of the position of my case and also because I move it occasionally. Here are the pics how I imagined it: (Btw sketchup roolz! Also best regards to ppl who made sketchup model of mb,cd,hdd, coolers, psu and the pump, you guyz made my life easier with them) Everything is made to scale and as is on the pictures, except the pump. Unfortunately I'm not in position of buying components specially designed for WC so I'm making the reservoir (I havent started yet), for the pump I'll have to use one for aquarium and for other stuff I'll manage. What do you think about the layout ? Do you have any suggestions on how to change it to make it better ? Which pump is quiter submersable or non-submersable ? Also if you know any good pump manufancturers for aquariums please share it with me. Can I use plexiglass for the reservoir ? Also I must note that if the heater core is mounted on the top 5.25" place there is 17-18mm from the top of the hc to the top of the case, so use of a 120mm fan is, unfortunately, out (If this design is used), because there is no 15mm thick 120mm fan. That's it I think... If I remember anything else I'll write it up. I'm listening to your suggestions Here's the link to my sketchup project file (size iz 1.7mb) if someone wants to edit it or to see actual and precise dimensions. edit: How should I regulate in/out system if the pump is submersable ? And what preparations I have to make so I can l8er add WB to the graphic card ?