How to use rotary 45/90 degree fittings.

As above, every time you want to connect the tubing to a component in the loop (waterblock,rad,pump etc) you need one of the connectors Legend posted above. If you want to add an angled joint - this connector is in addition to the fittings above.

I've just lifted the image below from Google, but shows the teo connectors on a rad; one with an angled fitting, and one without.
http://i.imgur.com/BlXH8.jpg?1
 
Water cooling fittings use a standard G1/4" thread, so you can mix and match vendors. Just check this to make sure when you want to buy.
I tend to use the same vendor, so I used Monsoon compression with Monsoon 45/90 degrees and now I use all EK ones.
 
Using Primochill Primoflex Advanced Tubing 16/11 - Clear

Then you need any of these fittings here...

https://www.overclockers.co.uk/water-cooling/fittings/16-11-mm

I don't know if 16/12 would work though, so I'd just stick with 16/11 to be safe. As a general rule, I would always advise staying with the same brand for tubing and fittings, to ensure 100% compatibility, but OCUK don't sell Primochill fittings at that size. That's not to say other brands won't work, but do your research to double check... I've read some horror stories.

:)
 
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Ok so built the loop no leaks or anything major but CPU temps seem a tad high 100% load on real bench and highest core was 77c while gpu hit 44c in heaven. Any thing i can do to get CPU temps down? block too tight? Ambient is 23.5c
 
Ok so built the loop no leaks or anything major but CPU temps seem a tad high 100% load on real bench and highest core was 77c while gpu hit 44c in heaven. Any thing i can do to get CPU temps down? block too tight? Ambient is 23.5c

What's the spec ?
 
CPU's that high because Intel use TIM under the lid. You need to de-lid to get the most out of CPU water cooling or go x99. GPU temps look normal for 1rad in Heaven benchmark.
 
Could be that the thermal paste has been applied either too thinly or thickly, or the water block isn't seated firmly or evenly enough. Either that or your previous air cooler on the CPU was so good that it ended up being more efficient than a water cooling loop that includes both GPU and CPU (at least with just 1 rad).
 
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