Liquid Utopia

I've been using this for several years now and have not had any issues at all. Distilled water and liquid utopia is the recipe for success. After trying EK cloud white for a couple of years I encountered issues so I wanted to switch to something cheaper and more effective. I only do maintenance once a year and there is seldom anything built up in the blocks if anything at all in that time period for several years now. I run 3-360 rads and an external 1260 so I just fill the loop and dump the whole bottle in. No issues, no mess, no headaches, just solid performance.

Ekwb used to be what i used but its just so hard to find that stuff and its easily double the price. This stuff really works! 2 weeks after putting it in my loop and its super clean. I have to explain my setup. All my parts in my loop have been used before, this makes it a bit easier to know if a fluid will have issues. If your loop is growing something or having issues your loop in general is not compatible with all the little parts in it. That or you got cat hair in your loop... Not hard for that to happen. For me i knew all my parts were fine so i didnt have any issues. No growth so far. Looks crystal clear. I did use liquid restore from them before using this stuff just to clean my system out real good before hand. Make sure you shake well, it will be a little foamy for a few days but it clears out. Water in my loop looks super clean and a bit thick. I trust it. Ill be back later to report if there are issues.

I had to top off my reservoir so I busted out the leftover corsair liquid. It had been sitting for a while and must have had some contamination at one point, because I started seeing buildup very fast the next couple of days. It started looking like calcification but it was growing and in only a couple of days. I got this Utopia product. I put a bit more than was needed into my mix to help over-compensate, and between my backup bottle and my cooling system used this entire small bottle. The grown started going away quickly! Now, as I write this, I think it's gone. Pricey product, but works very well.

I only use water with some kind of biocide and an anti corrosive. I had been using (fingers crossed no issues) Water Wetter which is for engines and smells bad. Only used 1/3 teaspoon in my loop and it kept corrosion out but I worried about it. Now I have a new res (not because of the water wetter) so am trying Liquid Utopia instead. No smell, and as I use clear tubes, I can shine a strong flashlight down into the fittings (benched so easy to get to) and they are nice and shiny still. Check it every week, I hope I get a year between cleanings. You can keep your gunky dyes and dayglow stuff that just does not cool as well as water and frankly just makes a goopy mess. As long as I can just use water with something that keeps critters from growing and the copper from turning black I am happy. And so far, I am quite happy. - 1 star as I have not had it in the loop for a year yet, with a teardown. BTW it looks great with clear tubes and different color LEDs shining on various tubes; looks like glacial ice and shiny liquid diamond reflecting the light. Fun without the mess.-- Edit-- I could not wait a year. I never let it sit that long with any liquid. So I just finished teardown cleanup and reassemble. WOW it was clean. No corrosion black on the copper block despite just being distilled and half of one of these little bottles. Could have easily gone a year. Now I am impressed. Let the 'kiddies' use their colored day glow stuff that gunks up and needs major cleaning. I will get better cooling, easier cleaning and less mess with this stuff. I admit I was too nervous about it to let it go a year but now I am not.

Worked as it should.

Easy to use. Made in the USA!

I've used this stuff for years, and it definitely keeps my loop and water blocks clean for at least a year

PrimoChill Liquid Utopia is my go-to for all my liquid cooling builds. I’ve used it with distilled water in multiple systems and have never had any issues—no growth, no discoloration, and no residue. Keeps everything clean and running smoothly. Highly recommended for long-term reliability.

冷却系の藻の繁殖や発生を防ぐための薬剤のようですが、MSDSなど内容物の性質を示す情報が一切手に入らなかったのが不満です。 内容物は無色透明の液剤で、精製水に混ぜて使用するのですが混ぜても一切わからない…。 まあ、やらないよりやっといたほうがいいのでしょうという感じで使用しました。 気になる方はメーカーから直輸入したほうがいいかもしれませんね。

best for its purpose

Buen líquido funciona sin problemas, además de excelente rendimiento.

This made me 4 litres of water cooling coolant!!! Wish I found this sooner instead of spending double for just 1 litre of coolant from the mainstream coolant makers.

I like to mix a bottle with 2.5 litres of water just to be safe. It runs amazing, no issues at all for 6 months