Update Build log #1 (14-05-19) - Hardware Assembly
Unfortunately I had a few kickbacks in finishing the build.
The waterfall reservoir had a really tiny leak on the bottom. So if you've ever worked with the Cosmos 2; you need to get the whole frame clear again to dismount the front body kit. Watercooling loops are all dismounted.
I've also tested the RGB (5V) on all the hardware/fans/cpu block. Also I've got a RGB strip for the plexiglass plating to light that up with a custom sticker attached to it (pics will be uploaded later). Because I ordered milky glass the lighting effect wasn't really what I hoped it to be. So I ordered a different/longer strip for more light. This will come at the end of may.

(minor) Update Build log #2 (16-05-19) - Hardware Assembly
- Still working on the waterfall reservoir. The used glue wasn't sufficient for its purpose. Still a tiny drop escaped through the glue on the bottom of the reservoir. I disassembled the reservoir and removed all the old glue from the surfaces and used a new different type of special plastic glue. This type is water resistant and should do the trick. Going to do some leak testing this evening, I am very curious.
- 3 Missing parts are coming in this week; RGB Fan, 1m (digital) LED strip, 2nd temp sensor.

Update Build log #3 (21-05-19) - Ambient Effect
Allright so we are back in the game. The leak has been fixed on the waterfall reservoir, but it needs some repainting. From all the working the paint got damaged. Also the final fan came in and the 5V ledstrip (Bykski) for syncing with fan RBW. So this got me to the point where I wanted to see what the effect was of the lights. So see for yourself.
PS. Case looks really empty now but once the waterfall reservoir is back in, it will go fast with filling empty spaces :D.
Also cleaned the 1080Ti and did a thermal paste refresh

Update #4
So, this was quite the ride. What I've done so far

• Fixed the leak in the waterfall reservoir. Proper glue did the trick.
• Designed 3 stickers for the panels, attached them and mounted in the case. (Still one missing on the picture)
• GPU thermal paste refresh.
• Removed small reservoir+mounts in the basement. The horizontal buffer reservoir was obsolete.
• Permanently installed the two pumps.
• Realigned the connections on the pumps and created 1 drain point for both loops.
• Spraypainted the pass-throughs, outer heatsinks on the RAM modules and waterfall reservoir (yet to be installed).
• Installed temperature sensors.
• Installed sleeved cables on the motherboard and GPU.

Still got loads to do & having fun doing so :D
I am think to redo the GPU supply pipe, because I didnt think of the radius in the bend compared to the return pipe.

Update #5
As you can see on the pictures, it looks nearly finished. Well not just yet. I'm really taking my time with the build.
The waterfall reservoir is finally working as it's supposed to. No leaks detected after 24hrs in both loops. Need to drain the system one more time, so the loop will be clean from small (plastic/metal) particles.
Currently only one minor error to be dealt with: the pump for the GPU keeps filling up with small air bubbles. This is probably caused by the waterfall reservoir. When the water drops down it causes air bubbles in the water at the bottom. This is sucked in by the small pump and causes it to make noise. So to solve this I need to make a 'blow-back' where the air can return to the top of the loop, instead of following the whole loop from bottom to the top.
Check out the pictures! And enjoy

Update #6 - Adding Mayhem UV reactive coolant
I've added the UV reactive coolant. Although the pics are not super quality yet, you can get the impression already.
So I can start cleaning the rough edges and finish the build up to the final build log.
I havent really solved the 'air problem' in the GPU loop, it kinda solved itself. Just keep running the loop removed all the air, and the coolant made the water less viscous also. This means the water runs down the loop more smooth.

For next build log; cable management, and some decorations

Update #6A - Removing Mayhem UV reactive coolant
Oke, so a small learning point from here on; Mayhem XT-1 Nuke, is NOT compatible with PETG tubing. It causes damage over a period of time to the tube and eventually will crack (Ethylene and PETG cause a chemical reaction over time). So yes, apparently Mayhem is not reporting this on the bottle, only on the website and purchase description. So the system needs to be drained, and I'm going straight back to EKWB EK-Cryofuel.
The CPU loop coolant might have had a chemical reaction of some kind, so I had to remove that one anyways. Anyhow, I have no idea how that is possible, after flushing the loop a couple of times before use. All the parts were new except the D5 pump. So maybe there was a small residu in the pump, that would be the only explanation.

So I pretty bumped by this discovery. For now I'm not going back to mayhem brand anytime soon, because these warnings should be on a bottle and not on a %^$# website. This bummer is also a moment to learn more and more about the do's and don'ts :)
So we're getting to it and cleaning the loop it is!