It must use the worst grade of acrylic possible.
The XSPC res I have ordered is cheaper than the T3 and it has a pump built into the res.
I know it's not great but at least I will be using my PC with confidence again.
I have invested over £200 in this res with the cost of res, pump, faceplate and 1 replacement and after 6 months it has all come down to me replacing it all with the XSPC res+pump setup I threw out at the start.
Irony has a funny meaning for me at this point.