Hi cc01, I am planning to use only built-in AC EHEIM pumps for starter and optionally, if flow rate is not satisfactory, add additional Laing D5 or Laing DDC pump. I was considering mainly single loop solution (with two 720 XT connected in serial), so I really need an answer for the question Q2, "Is there any particular reason why two 720 XT may not / should not be connected one after another in single loop?". Regards, KoD

Hi, I will need to dissipate about 2.2kW of power from my machine (2x CPUs OC, 4x 690 OC, addtional WB for MB, OC RAMs, PSUs: 12 water blocks in total - aquagrafxs on GPUs + HF blocks on rest). I have bought two 720 XT Mk. IV and I want to know which will be the best configuration for them to operate: 1. I can build single loop with two 720 XT connected in serial. 2. I can run two separate loops with each 720 XT. Q1. Which configuration is the best for this kind of machine configuration? Q2. Can...