Both pump 1 and 2 run fine for over a year with 260L/h. Pump #3 runs no reverse so maybe a bubble in a pump or something .
Update: reverse the pump and it works fine now. Turn out my existing loop goes to the other way instead of the way i built it.
One to test if more flow will reduce the temp. When I first plugged in, i saw the flow up to 423L/H then it droped down to 0 then back up to 105 and stayed there.
I put a flowmeter on the outlet of the mora then i connect the extra pump before the loop goes into the cpu block. I also try to connect the pump before it goes back to a mora but the flow is still the same 105 L/h.
I have dual d5 pump for a mora420 and 1 cpu block and 1 ram block with 260L/h flow rate. I plugged in another d5 pump and flow rate is only 105L/h now. I let it run for a whole night already. What is going on?