Since someone asked me about it, I decided to post this (confirmed by aleck as well). Just in case history repeats.

Note:
Inline pumps like the Laing D5, Laing DDC and AquaXtreme 50Z are NON-submersible. DO NOT EVER submerge them into water! This is because they have other electronics at the back of the motor that are not sealed. The word Inline says it all. All Inline pumps should be non-submersible.
Pumps like the Nirox P2800 and Eheim's are encased in a single block of epoxy and thus are fully waterproof and submersible.

This post has been edited by MetalZone: Jun 14 2006, 04:34 PM

I recommend minimum 1/8" thick walls for Tygons, i.e. 1/2" ID 3/4" OD, or 7/16" ID 11/16" OD. Any thinner than that and they kink too easily for my taste.

Wrong thread to ask.
Go here http://forum.lowyat.net/topic/135886

i think it's best run with the configuration on the left. you already explained it yourself why. coz of the different angles.
the left, you get equal flow restriction on both sides of incoming flow although the differences are pretty minor.

This post has been edited by MetalZone: Aug 1 2007, 03:06 PM

if i remember correctly, the Y-barb i sold u, the top of the Y is even sharper than a 90 degree angle. probably 60 degrees. i don't think the flow would like that bend, but then again, the differences might be pretty minor.

i had a look again at the pressure drop vs flow graphs of the MCR220 and MCW60
MCR220 at 1.5gpm has a pressure drop of 0.6psi
MCW60 at 1.5gpm is 0.75psi

So based on that assumption, adding another MCR220 to the loop in series is like adding a slightly less restrictive MCW60 waterblock. it doesn't appear to kill the flow that badly.

This post has been edited by MetalZone: Aug 1 2007, 10:25 PM

I'll frankly say I can't say for sure.
we know that higher flow rates contribute to higher efficiency, so with any component, whether the rad, or waterblock will perform better with higher flow rates. however, in general terms, radiators don't benefit from that much from increased flow rates; in fact much less than current waterblocks.

overall flow rates will be slightly higher with parallel rads. thus flow rates thru the waterblocks would be higher. but flow rate thru each of the rads alone will be halved.

in a serial rad setup, overall flow rate is slightly lower, that is, the waterblocks too. but the flow rates thru the rads are now equal to the rest of the loop.

which will perform better you say? to be sure, we're gonna need someone to test for real or do computational fluid dynamics. i'd GUESS with setups with less pump head pressure, running a parallel rad setup will benefit more, whereas with high head pressure pumps, the difference may not be so apparent.
you probably can get away with a serial setup since that's more sensible for your tubing routing needs.

UPDATE:
http://www.xtremesystems.org/forums/showthread.php?t=145954
Read up this thread for further info.
I had totally forgot about the Delta T (temperature differential between water temp and ambient temp) of the radiators, and in this case, parallel wins. radiators are more efficient the higher the delta T is. with parallel rads, both rads have the same Delta T. whereas, with rads in series, the second rad will have a lower delta T than the first because the water temp has already been lowered by the first rad.

This post has been edited by MetalZone: Aug 3 2007, 12:09 PM

I believe you can get away with just adding the alphacool nexxxos xp into the loop (after cpu block of course) since the FuZion isn't very restrictive, and the PA is one of the least restrictive rads around.

I think it's pretty decent for a single waterblock(CPU) loop.
I wouldn't advice adding too much heat load to as you'll end up with mediocre performance only. You might wanna look out for the 2x120mm version soon.

Bro, wrong thread to discuss this. Discussions and questions should go here: http://forum.lowyat.net/topic/180866/+1780
But to answer your question anyway, yes you can. You could mod the top panel. Please discuss further via pm or in the aforementioned link.