Pump question

[Jojobaplant]

Hey Guys,

 

I once again had a question. First, let me lay out my custom waterloop configuration:

1. Massive reservoir consisting of two large +/- 2 liter bricks, connected by a 45 mm wide pipe, holding 4+ liters, because it looks gorgeous, it doesn't hurt in any way, my case has the space, pump won't run out of water any time soon and why the hell not?

2. Dual EK Revo D5 pump apparently in serial mode;

3. A combined length of the waterloop (front and back) of about 5 meters;

4. 2 360 radiators + 1 120 radiator.

5. Order: Res - pump - rad - cpu - rad - GPU - rad - exit.

Given that everything is rather large, I reckoned one single pump would not pull the stunt, although I previously had a single EK Revo D5, which performed, but the outlet was kinda measly, indicating that it had a lot of trouble pushing the water around. So I decided to get a dual pump, because hey, double the pump means double the power, right?

Now, it started out enthusiastically with a good solid outlet that somehow impressed me. But now, after a week, ten days or so, the outlet stream has been reduced to a teenie weenie stream, not as measly as previously, but not much butter. The system is all bled out and as far as I can see, there are nowhere any bubbles in the loop that should concern me - a few tiny ones here and there.

Anybody has any idea how the reduction in performance came to be? I have the pump only on molex as I learned that this way it performs at 100%.

Do EK Revo D5 pumps gradually slow down over time? Or is this normal behaviour? It looks like it as it worked very well at first, ergo the size of the loop might not be the problem. Hope anybody can help me on this one. Thanks!

 

Gr,

 

J.

 

[For Science!]

27 minutes ago, Jojobaplant said:

 

 

Coolant used, waterblocks in the system, and photos of the system would be helpful.

[Jojobaplant]

Ah yeah, forgot: coolant now used is EK Cryofuel solid; Waterblock CPU: Alphacool's Eisblock and GPU is a MSI Geforce 1070 Seahawk. I will post pics later on when I get the chance.

As for the coolant - I used Mayhem's Nuke previously, which is non-opaque and the issue was the same.

Also, I used to use EK's monoblock for my mobo, but I learned that this provided too much resistance, so I changed it for the smaller Eisblock.

[AnonymousGuy]

Guaranteed one of your blocks is clogged.  A single D5 pump should be able to push TONS of water through any desktop loop that isn't 5+ blocks.  I can set my pump to 2 / 5 and it'll be sufficient for a cpu + gpu loop with close to 10 feet of 3/8" tubing.