

💧 Refresh your rig, reboot your flow — clean cooling made simple!
PrimoChill System Reboot is a pre-mixed, water-based cooling loop treatment designed to safely and effectively remove algae and buildup from custom water cooling systems. Environmentally responsible and non-toxic, it is compatible with all plastics, rubbers, and gasket materials including acrylic. Trusted by enthusiasts for restoring optimal flow and extending system longevity with minimal effort.














| ASIN | B07845Z5DM |
| Best Sellers Rank | #118 in Water Cooling Systems |
| Customer Reviews | 4.3 4.3 out of 5 stars (268) |
| Date First Available | November 22, 2017 |
| Is Discontinued By Manufacturer | No |
| Manufacturer | PrimoChill |
| Product Dimensions | 2.41 x 1.45 x 1.45 inches; 0.81 ounces |
D**K
48 hrs minimum!
Had some gnarly algae buildup in my loop. Didn't know it til I did annual clean out. Bought this a ran the system for 2 days, almost completely removed all the algae. Had to manually clean the CPU cooler and one of the radiators but otherwise saved me a small fortune.
G**I
Best I have used so far
This is by far the best cleaning solution for my custom loop I have used. My system had a small amount of growth and buildup in the CPU mono block. It was almost completely blocked up after almost 2 years of use. (Yes I know. I should never have let a loop go that long. But after about 2 hours this started to help the flow and after the full 24 hours of running there was very little buildup still stuck in the fins. I highly recommend this product. Just make sure you fully flush out the system.
M**O
Regular maintenance
If you use this for regular maintenance, I think it should work well. On a system I had running for a year with orange dye, I finished two bottles following all instructions, but still ended up disassembling the loop to manually wipe the stuck dye off the blocks. I also had to use hot water and vinegar on my radiators and still saw a lot of orange come out. Morals of the story: don't use bad dye (or any at all), do maintenance more often. This product works for normal use and regular maintenance. It is by no means a miracle solution.
H**A
Essential open loop cleaner for prep.
Use this every flush, you'll never have a growth. It doesn't seem like it's much more than just soapy water but whatever it is, it's served me well.
C**N
Use method 2 for results.
Like anybody I bought this with low expectations. But it worked great when I used "method #2" for cleaning. They list it on their website but not on the bottle. That's fine it's a small bottle. Method 2 pretty much consisted of me dumping the whole bottle into the loop. Method 1 has you mix it into a gallon of water then fill your loop with the mix. My results where good with method 2. Ran for 48 hours, took a lot of staining off the blocks and res. It did ok the tubeing, without some decently toxic chemicals pulling stains out of tube completely is unlikely. For $5 I think it's totally worth it. Many people I'm sure overlook method #2 because they are not aware of it, and they may be the reasons for some lesser reviews.
N**2
Works good enough...
This isn't no PTNuke by any means... but it does do a good job of cleaning. Following the instructions it says to dump the bottle into your liquid cooling loop, and wait 24 hours. After about 16 hours later, the water in the loop has gotten a little murky from what i assume is some kind of schmoots inside of the loop. I've used this stuff previously from microcenter, it still does a good job. Be warned - there might still be stuff coming out of it even after cleaning and flushing.
A**N
Is safe or not safe for aluminum?
Page says in 2 places "surface recommendation aluminum." I figured this was the aluminum compatible version of system prep or something. But no... scroll ALL the way down to the bottom, past all their claims of being "safe to use on industry standard parts" and you will see disclaimers that they aren't responsible for dammage to components and a warning it isn't compatible with aluminum. Cute. THAT NEEDS TO BE IN THE ITEM DESCRIPTION AT THE TOP! Not in small text at the bottom of the page.
E**C
It worked for me.
I didn't really have any serious stains that I needed to remove, or if I even needed it at all, but I used it. I replaced my waterblock and radiator, but kept some existing components. I disassembled the waterblock and cleaned it. Then I used Primochill Rad Clean on the new radiator and flushed it well. I then reassembled everything and ran System Reboot through the system for over a week with method two (Use the entire concentrate in the loop). After draining and flushing System Reboot, I tore down the loop and cleaned the tubing with a test tube brush and it actually looked pretty good. (There was some algae stuck up in the tubes for several years that I never really got around to removing.) So yeah, I think it worked. I'm now using Liquid Utopia and will probably write a review on the in the future.
R**N
Use this to Flash out my old system then install the blue color and everything looks good
S**N
I was an idiot and didn't rinse out my brand new custom water cooling loop before filling it. So filled it with distilled water for a week waiting on my EK Cryofuel. Drained most of the distilled, but the EK Cryofuel in and immediately got a cloudy mess. Took 2 weeks to turn somewhat clear, but left the blocks with a white film on them, my Corsair soft tubing went a tint of yellow. Flushed the system, replaced the soft tubing with EK tubing, then did a 24hr rinse with this stuff using method 2. 24hrs later, I'd say 90% of the white film is gone. I flushed this stuff out with 3 rounds of distilled and now I'm back with some fresh EK Cryfuel and so crystal clear liquid!
Z**E
$18 for 15 mL is mind blowing over priced.
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