Yes, but going by the pictures of the fins in the blocks it also looks like leeching from the tubing as well to me, especially as he describes it as tough to remove and like glue because that's exactly what plasticiser is like. Sticking to a single brand won't make any difference.
Preparation is important when setting up a new loop. Thoroughly flush out the radiators, either with a Mayhems kit of go the cheap option and use de-ionised water with distilled vinegar which a lot of us use on here.
Choose your components very carefully. Reading some reviews, especially of radiators, will help a lot. Custom watercooling is very expensive so get it right the first time and it will last you many years.
Check the blocks over and make sure all the screws are tight.
Never, ever mix metals in the loop, especially aluminium as you could end up with galvanic corrosion and you really don't want that.
Have a read of this.
Make sure the pump is seated in the pump top or res properly.
Use a recommended brand of tubing, don't go for the most expensive thinking it's the best as that's not the case most of the time. I have used most brands and the only one I have never had plasticiser leeching from is Mayhems tubing which just happens to be just about the cheapest tubing available. I won't use anything else these days.
Take the time to carefully plan your runs of tubing. Ideally you want the shortest runs without kinking or looking untidy.
Do not use screws that are too long when fitting the fans to the radiator as you can easily puncture the tubes if they are directly under the screw.
Choose a good coolant that has all the additives that you need against corrosion and algae growth. Again, for me the best is Mayhems X1 and that's what I will always use. You could use de-ionised water and a silver kill coil but not if you have nickel in the loop as it will react with it and cause serious problems.
Before filling double and triple check everything. Make sure all the fittings are tightened up, no kinks in the tubing, everything is secure.
When filling take your time to avoid spillages. Place heaps of kitchen roll under joints, blocks, rads etc and do a leak test with just the pump running (no power to the pc) for a few hours.
If you are new to this there are plenty of guides on the internet so take the time to watch a few of them.
