Originally Posted by McFridgeGuy
It's been a while since I've built a PC, but I'm straying away from Macs. I'm slowly getting the parts for my build, so far it's a Corsair 250D, Asus Impact, Bitspower motherboard waterblock. Planning on getting the Koolance RP 1250. Graphics card, undecided.
My question is what do most manufacturers recommend for a coolant? I'm thinking about using a blend of propylene glycol.
Don't use Propylene Glycol... You really need to have a very good reason to use that over Ethylene Glycol. Before you BLINDLY buy something like a silver kill coil please check out this link which is simply me going to google typing in the word kill coil and clicking on images... https://www.google.com/search?q=kill+coil&safe=off&source=lnms&tbm=isch&sa=X&ei=y5kqU4bfDsSwyQGz3oHoCw&sqi=2&ved=0CAkQ_AUoAw&biw=1829&bih=961
What happens in those images doesn't happen to everyone so there will be lots of lucky people on the forum that say I used a kill coil and never had those issues and no algae...
Thing is I don't use a kill coil (after the havock it wrecked on my system) and I have also NEVER had algae... Some systems I use NO additive and flush every 6 months using distilled water. Some systems that have mixed metals of any kind (which is hard to avoid these days because of all the nickel plating) I will run ethylene glycol but only a tiny tiny amount.
Ethylene Glycol will kill algae, lubricate your pump, and inhibit corrosion. Don't use Propylene Glycol because it is very thick and has poor cooling properties.
Silver kill coil might kill algae (as a lack of algae is not proof that it was the reason algae never showed up) where as Propylene Glycol is proven to kill algae as a side effect of it high toxicity. Silver kill coil also WILL react to the copper and nickel in your loop... in fact I believe it needs to react to be highly effective as if it just stays unchanged I don't think it does much.
One thing you should be aware of. Although Ethylene and Propylene Glycol are supposed to be safe with Acrylic I have seen some minor cosmetic issues with acrylic reservoirs when EG is used in a high concentration for a long period of time. So use very little... or if your not worried about your reservoir looking perfect then who cares... also you have the option of running glass reservoirs like what Aquacomputer sells...
PT Nuke is surely a better option than a silver kill coil. It Copper Sulfate which is perfectly fine to use with copper where as silver can react to copper and nickel.
If you run nickel in your system I don't recommend PTNuke Cu instead I would use PTNuke PHN (clear stuff) or the Ethylene Glycol...
To get Ethylene Glycol you can buy Feser Base which is perfectly clear, Swiftech Hydrx concentrate which only comes in a wretched green and has other non soluble additives (that inhibit corrosion) and react with UV light), or Mayhem's XT-1 Concentrate.
In my opinion EG is the clear winner if you use a glass reservoir or do not care about some cosmetic issues over time with some reservoirs (not all Acrylic reservoirs have this issue).
Second to EG I would say is PHN since it is compatible with EVERYTHING but it doesn't stop corrosion and 3rd would be Copper Sulfate which also does not stop corrosion and might even make corrosion more likely with nickel, aluminum and the TIN in the solder of some radiators.
Also the reason manufacturers use Propylene Glycol over Ethylene Glycol is because it has a very low toxicity and is even a food additive which makes it easy to ship it wherever they want. The reason that often times you won't see Ethylene Glycol in premixes is the same reason... These companies will have major shipping and sales restrictions when you look at a global level. I would not at all doubt if that is why Mayhems went through the trouble of finding a way to make their XT-1 concentrate non toxic even though it uses Ethylene Glycol.
Anyways... Feser Base, Mayhem's XT-1 Concentrate (not pre-mix), and Swiftech Hydrx Concentrate (not pre-mix)Edited by givmedew - 3/20/14 at 12:52am