Ok, I mean I do wanna go for the dual loop just cause it'll fill up the case a bit more, I might add another 1080 ti in there as well so I wanna have a dedicated loop. Yes, I completely agree on the drain valve, and these bends were all made by hand, took me about 2 days and 2 sets of uv tubing lol. I'll add some 90° fittings then but not too many, and I'll make sure to peel that sticker off as well you're right about the residue, might become a problem later on. I also should mention I was using a 650 watt psu. Now I just swapped it out with a 750 watt and GPU temps dropped down to 68° C max. Idk if that really makes a big difference but I did get a 4 degree drop, ambient temp by me is about 80° f but I have the ac on almost all times so that always plays a factor.