#watercooling

I was putting in my tubing for the radiator to gpu and I noticed I had a little bit of sag and by a little I mean minor but still those little things worry me since I spent 6 grand. Should I be worried about a slight sag on my tubing?. And how do I know that my tubes are secured perfectly?

Well, I wanna make a gaming custom water-cooled pc, but I don't know almost nothing about the 'water' I will need. But I think that I will use distilled water + biocide. The problem is I don't know what biocide to use. And also I wanna know what dye I can use. P.s. I accept every single suggestion.

I have been saving in the past half year for a new computer, my first ever build so I'm trying that everything will be perfect. I figured up by now most of my components but a there's one piece in the puzzle that remains, can I put a 240mm radiator with two 140mm fans? The question is that the...