I think since I started with just plain water the PH was at 7 with 0.1 0.2 EC, I was thinking of so much other things that I forgot about the obvious.When I was running coco the flush would be mixed at where I wanted the bag to be, and then run through till I saw # more to my liking coming out. The beauty of coco...
So flush with light feed and calmag to 5.7 PH and 0.4 0.6 EC, does that sound about right?