Larkooler iSkyWater 300 DIY 240mm Kit

Posted: February 24, 2013 in Kits
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Unboxing Review

I always like to search around the internet a little before I do my own review as it does sometimes enlighten me on this I should look for or look out for. I also occasionally stumble upon a good YouTube video which I did this time.

ghnnes on YouTube did a really nice job on this unboxing video that I found when searching the net for information on the iSkyWater. While he had the silver kit vs black which I am reviewing, it does a great job in showing you the bits and pieces. The only difference I notices is his kit came with a tube of TIM material where I only got a packet. Anyhow, for another video look, here is ghnnes YT video:

This gives you a really good idea about the parts and pieces in a video format, or I’ll give you my own take in picture form:

Packaging & Protection

The parts and pieces are all shipped in a formed bubble container of sorts which does a pretty good job at protecting things, although I did see some paint rubbed off the radiator.


A very complete kit including the fluid!


Coolant / Fluid

One thing I was really happy to see after my last experience with the XSPC kit which failed to provide coolant, was…coolant in a nice little bottle with a nice twist top that should make filling small ports very handy. No need to run to the grocery store to buy distilled water and funnel, they give you all you need in the kit, very nice!


5% Propylene Glycol, 95% Water, bottle + Twist Top

I found this link to say the percentages (5%/95%) of Propylene Glycol vs. Water. They do have some warnings on the bottle tat the product is “uneatable, please keep away from children”, however the toxic nature of propelyne glycol per Wiki notes the following:

Prolonged contact with propylene glycol is essentially non-irritating to the skin.[18] Undiluted propylene glycol is minimally irritating to the eye, and can produce slight transient conjunctivitis (the eye recovers after the exposure is removed). Exposure to mists may cause eye irritation, as well as upper respiratory tract irritation. Inhalation of the propylene glycol vapors appears to present no significant hazard in ordinary applications. However, limited human experience indicates that inhalation of propylene glycol mists could be irritating to some individuals.[19] It is therefore recommended that propylene glycol not be used in applications where inhalation exposure or human eye contact with the spray mists of these materials is likely, such as fogs for theatrical productions or antifreeze solutions for emergency eye wash stations [20]

Propylene glycol does not cause sensitization and it shows no evidence of being a carcinogen or of being genotoxic.[21][22]

So in general I think it’s fairly low in being hazardous or toxic, but not something you want someone accidentally ingesting. Definitely much less toxic that Ethelyne Glycol which some other coolants use. I would simply suggest keeping it out of reach of children and wash your hands when done with it.

If you read further on PG it notes how it is hazardous to aquatic life which is probably what gives it the biocide properties. It does also lower the freezing point, but that quality is of no use to ambient water cooling. Last but not least it does give some lubrication qualities which probably helps with the pump lifesand to some level.

I am generally happy with packaging and fluid provided, it is nice to see the “Complete” nature of the kit and I like some of the nice little features such as the fill bottle and twist opening fill top, these should come handy for filling and I won’t have to run to the store for water this time…:)


The tubing provided is a nice clear tube, so no problem with off-color yellow like I had with the XSPC kit, but the tubing is very stiff in durometer. It feels very much like that PVC tubing you can find at Home Depot. That’s probably not a big deal considering the very small size though, but the size may or may not be a problem for you. I personally don’t care for the small size myself, perhaps I’ve just become accustom to the larger 5/8″ OD size or so. I don’t even really like 1/2″ OD tubing and this tubing is even smaller at 8mm OD which is just a hair smaller than 3/8″ OD. I’m going to call it puny because it is tiny. I completely understand large tubing isn’t necessary for great performance and tubing pressure drop losses are generally small, but aesthetically the 8mm OD size is just too small for my taste. With that said, it is more easy to route in your system and takes up a lot less space. I also really like the compression fitting they designed that are a perfect match for this tubing size, so I’ll go easy. Large tubing size is actually more of a USA cultural thing, many of our European brothers have been using lower flow and smaller tubing with great success. Very much personal preference and has practically nothing to do with performance.


With that all said, you get what you need and they have thought through providing you nice clear tubing, plenty of it, and nice fittings that are a perfect match.


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  1. M3TAl says:

    Did you end up getting Phelan’s H100i shipped to you?

    This message thing keeps changing my username, I think I’ve fixed it now.