Yuck!!

Biffa · 10 Sep 2010 at 02:40

Well I discovered why the flow rate in my old desktop loop had dropped to almost nothing.

I thought that the pump was gone in my old XSPC bayres and that became an excellent excuse to rebuild my rig (I'll be posting a build log soon and will update here)

It was wierd because the fluid (Feser Green) looked fine in the bayres, nice and clear. Some of the tubing looked like it needed replacing but nothing major.

So I stripped the old machine down, everything looked ok so far, Res, pump, GPU block... but then I got to the CPU block, a Heatkiller 3.0 LT.

Something struck me as soon as I removed the fittings..

After dissasembly the state of the gunking becomes apparent:

IT LIVES!!! :eek:

I'm not sure what this is, searches on the net point to a breakdown in the dyes in coloured liquids, or it could be just some biodiverse beasties that got into a sealed loop.. I am not sure.

But I've switched to coloured tubing and plain Distilled water with silver coil for all my rigs.

Beware.! check your loops, esp if flow starts to decrease.

piggin · 10 Sep 2010 at 05:21

Its the die from the feser one.

http://www.xtremesystems.org/forums/showthread.php?t=226632

This is what I had after only a few weeks

I now only use distilled water & a kill coil.

pastymuncher · 10 Sep 2010 at 09:28

Same happened to me when i had Feser one. The dye seperates and blocks the channels in the blocks. Only took three months in my case. It's rubbish and should be avoided. It's happend to loads of people on here and all over the net.

dfour · 10 Sep 2010 at 09:40

Is it just fesser one or can any dyes do this?? I only ask because I have used a UV dye in my rig for ther first time. Usually just use de-ionised water and water wetter.

MooMoo444 · 10 Sep 2010 at 09:48

Ah man, that looks nasty. Distilled water all the way, none of this coloured jazz.

Monkey Puzzle · 10 Sep 2010 at 09:51

MooMoo444 said:
Ah man, that looks nasty. Distilled water all the way, none of this coloured jazz.

Yep, coloured dyes are more trouble than they're worth. It's not just Feser 1.

Monkey Puzzle · 10 Sep 2010 at 09:53

Biffa said:
Well I discovered why the flow rate in my old desktop loop had dropped to almost nothing.

Beware.! check your loops, esp if flow starts to decrease.

Looks completely blocked - what kind of temps were you getting?!

MooMoo444 · 10 Sep 2010 at 10:04

What part is that in the third pic?

Not familiar with w/c but it looks absolutely manky.

Biffa · 10 Sep 2010 at 10:56

Monkey Puzzle said:
Looks completely blocked - what kind of temps were you getting?!

Interestingly enough about 90°C on the [email protected] and 65° on the GTX460. This is individually under load, I couldn't run them both under load without an instant reboot and temps going over 100°

Shows that the water was still clearing some of the heat even though it wasn't moving very fast. :eek:

MooMoo444 said:
What part is that in the third pic?

Not familiar with w/c but it looks absolutely manky.

Its called a "jet plate" and spreads the water over the pins/ridges on the block beneath. Some blocks come with different plates to give you a choice of cooling improvement vs restriction in the loop.

Monkey Puzzle · 10 Sep 2010 at 11:58

Biffa said:
Interestingly enough about 90°C on the [email protected] and 65° on the GTX460. This is individually under load, I couldn't run them both under load without an instant reboot and temps going over 100°

Shows that the water was still clearing some of the heat even though it wasn't moving very fast.

Yeah I had similar problems with bits or crap gunking up my HK 3.0 block. Not dye though, and not quite as extreme, but I'd guess from the looks of the jet plane and microchannels it was only getting water to 1/4 of the microchannels in my block:

Temps went down about 10-15C on load I think after cleaning out.

More gunk in my loop atm - will have to clean it out this weekend.

RizlaKing · 10 Sep 2010 at 12:22

Well thanks for posting this has helped me to decide to avoid coloured coolants and the one i was looking to get more for price then anything else was coloured so this has helped. Guess i will just go with clear distilled and silver coil will add a tiny bit for the coil but clearly worth it

.

Biffa · 10 Sep 2010 at 12:31

Monkey Puzzle said:
Yeah I had similar problems with bits or crap gunking up my HK 3.0 block. Not dye though, and not quite as extreme, but I'd guess from the looks of the jet plane and microchannels it was only getting water to 1/4 of the microchannels in my block...

More gunk in my loop atm - will have to clean it out this weekend.

Can be other things like residue from the radiator not being flushed out, or even plasticiser from some tubings that are out there. :eek:

RizlaKing said:
Well thanks for posting this has helped me to decide to avoid coloured coolants and the one i was looking to get more for price then anything else was coloured so this has helped. Guess i will just go with clear distilled and silver coil will add a tiny bit for the coil but clearly worth it .

I highly reccomend going for coloured tubing if you want colour

On another note, there are two things in effect here, Prepackaged coolant which is coloured and also had additives and inhibitors put in it. If its good kit then all should be well but a lot of this sort of gunk is caused by inhibitors that are in the liquid.

Whatever it is, I personally have decided to go for coloured tubing and distilled/deionised water with a silver coil and maybe a couple of drops of ptnuke to kill any beasties that get in there before the silver coil kicks in

Obviously YMMV and not all coloured fluids are equal but for me its not worth the risk anymore, will check back in a year and see!!!

Frozennova · 10 Sep 2010 at 12:33

Im currently using distilled and Mayhems Dye which can be seen over at XS forums.

i rebuilt my loop a few days ago after 3 months with no visible staining or gunking on the cpu block

piggin · 10 Sep 2010 at 12:56

dfour said:
Is it just fesser one or can any dyes do this?? I only ask because I have used a UV dye in my rig for ther first time. Usually just use de-ionised water and water wetter.

There has been similar problems reported by other manufactures (thermochill) but they are not so well published. Any fluid with colour within it can separate under normal working conditions.
Stick with water & silver coil or pt nuke. If you want colour then have coloured pipe

JonJ678 · 10 Sep 2010 at 13:17

+1 here, feser one and an ek supreme went badly wrong. Poor use of a tenner.

Coloured tubing is a much better plan.

NathWraith · 10 Sep 2010 at 13:32

Feser is well known for blocking loops after awhile. The coolant just seperates and blocks microchannels causing the flow to drop.

JeffyB · 10 Sep 2010 at 13:49

If your gonna get gunk it'll usually form on the cpu block jet plate and chanels as it's the most restictive part of the loop. As mentioned some people although using distilled water and silver still get gunk, i also believe this to be flux from poorly flushed out rads and plasticiser from cheap tubing. Ditch the coloured fluids and spend the money saved on better hose with no plasticiser

Monkey Puzzle · 10 Sep 2010 at 13:57

JeffyB said:
If your gonna get gunk it'll usually form on the cpu block jet plate and chanels as it's the most restictive part of the loop. As mentioned some people although using distilled water and silver still get gunk, i also believe this to be flux from poorly flushed out rads and plasticiser from cheap tubing. Ditch the coloured fluids and spend the money saved on better hose with no plasticiser

Which hose doesn't or does have plasticiser? :confused:

Quite tempted to get some 1/2"ID, 4/3"OD Neoprene tubing. Quite a distinctive carbon colour....

JeffyB · 10 Sep 2010 at 14:06

Some Tygon is made without plasiciser, is pricey though. I did read a test done on tubing and plasticier leech, some fared better than others. Primochill LRT usually does pretty well too.

mmj_uk · 10 Sep 2010 at 14:18

I made a brief post about it a few days ago:
http://forums.overclockers.co.uk/showpost.php?p=17330615&postcount=11

I had only used Feser Red for a couple of months because it came with the kit I purchased but I noticed the same thing albeit to a lesser degree, only distilled water for me now I'm not touching any fancy coolants.