this post was submitted on 26 Jul 2025
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datacenter liquid cooling solution (lemmy.world)
submitted 4 days ago by awky@lemmy.world to c/technology@lemmy.world
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Hi, I'm building a homelab watercooled unix server. I don't want to buy expensive overpriced pre-mixes from ekwb or aquatuning. What cooling solution do datacenters use for water cooling?

What is the chemical solution? Does anyone know?

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[–] qupada@fedia.io 7 points 4 days ago

In ours, the coolant is referred to as "PG25" (distilled water with 25% propylene glycol, plus corrosion inhibitors and other additives). It's widely available, and pre-mixed so it just gets poured straight in.

Your problem is going to be quantity. it might be cheaper per unit, but buying less than a 200 litre drum (if not a 1000 litre IBC) will prove to be a challenge.

I'd suggest a rethink, honestly.