What the Actual F***... Bacteria in a Glycol Loop

Working on something, Need advice... Post that here and we can help.
User avatar
Vinster
Site Admin
Posts: 308
Joined: Wed Feb 12, 2020 10:52 pm

What the Actual F***... Bacteria in a Glycol Loop

Unread post by Vinster »

So I've migrated over to my 5800x custom cooled rig for about 2 months now. That means that my 1700x rig has been sitting powered off since... I went to power it on last night and noticed this... and happy I did... I did not power it on...

20210526_142527 (Large).jpg
20210526_142612 (Large).jpg

you can see from the second picture what the colour is supposed to be. I've never had an issue with this 10:1 glycol mix. but I've also never had a rig off this long... Now I saw something similar in my 5800x glycol mixed fluid (same mix). but I attributed that to the temperature probe and "possible" differential metals (though it's coated like all the other fittings) as it was only at that probe/fitting.

I might be going with a purchased mix going forward...

I went this route for chem because the 15% Antifreeze mix I used to use was fine, but I noticed that it was breaking down the plastic fluid disbursement plate within my EK CPU water block, this was after over 2 years of use. So Glycol being a little less abrasive, I thought this to be a safer route on plastics...

all I can think of is that the glycol somehow "separated" and caused this?

Thoughts and looking for input...

I might go pre-bottled fluid after this... though the cost is going to suck...

Vin
You do not have the required permissions to view the files attached to this post.

User avatar
element6
Posts: 12
Joined: Thu Jan 28, 2021 9:15 pm

Re: What the Actual F***... Bacteria in a Glycol Loop

Unread post by element6 »

Hey Vin. What a mess!

My first thought is ethylene glycol compatibility with aluminum and copper. You may consider switching to a more aluminum compatible chemical.

But that doesn't explain your sludge. I'm not sure what is going on.

User avatar
Vinster
Site Admin
Posts: 308
Joined: Wed Feb 12, 2020 10:52 pm

Re: What the Actual F***... Bacteria in a Glycol Loop

Unread post by Vinster »

block and rad are copper, res is plastic and glass with a SS internal grill. The fittings are all black anodized aluminum. Can't really get copper fittings.

in another forum I frequent they suggest plasticizer from the tubing, could be. I've never seen it in person. the sludge has no smell and took 2-3 years to form and didn't until the PC was off for 2 months... I'm at a loss.

where I clean the tubing is staying cloudy... so it could be... I don't care. I'll see if I can clean it out. I'm wondering about the rad. I replaced my previous one that I bought from a member here back in like 2011/2012 along with a massive res.....

Vin

User avatar
Mr-Scott
Posts: 20
Joined: Wed Apr 01, 2020 1:03 am
Location: Upstate NY

Re: What the Actual F***... Bacteria in a Glycol Loop

Unread post by Mr-Scott »

Plasticizer. I concur with your other forum. :mrgreen:
Loved by thousands, hated by millions.