Reservior or Not???

[cmcquistion]

I've got an Eheim 1048 (600 liters per hour) and I'm going to do a massive watercooling job, CPU, chipset, AGP, Hard Drives, and all. This pump can be used inline or submersible. Which is better? Would submersing it in water in a thick plastic case cut down on magnetism leaking out. I've got a lot of hard drives and I'm not sure where to put them.

[mcrites]

I am using an inline with a fill line, with a pvc airtrap at the top of the fill line, which I used the idea from someone else in this forum. I just got 2 50mm pvc fittings, the bottom one would go to 5/8" I believe, than I had an adapter to 3/8", shoved that into my fill line, glued some 50mm pipe into the bottom pvc,glued the top pvc, which has threads on top, to the top of the pipe, and have a screw cap to screw into the top. I fill the water in through this device, and I used some teflon goop to fill anything else out that I did not use glue.