run it about 30m. then check the fittings. there shouldn't be any moisture towards the base of them, it there is, you've got a bad seal. Alphacool Straight Barbs are notorious for not necessarily fitting because there's just too much threading in some cases. I personally would have suggested leak testing with distilled water before putting in any other fluids or dyes. That's what you're supposed to have a drain valve for. Like it or not, you'll eventually have to change fluid, just like in a car... and that's why having a drain valve is crucial.