fill and bleed outside of the case before you leak test, I think that's what most ppl do
what I used to do was to put the two hose connections that go to the T-fitting and put them in a clean tupperware reservoir
the bleeding process is greatly shortened, after about half a day (just to be sure) I connect the T-fitting submerged (with clean hands to prevent any major contamination)
go with the hdd carriages, lots of ppl do it, but I recommend sucking out of the case through the rad, rather than blowing in
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