Adjust it as high as you can and so no skimmate is made and it does not over flow. Leave it set like that for 3-5 days and if it does not make skimmate then feed heavy for 3 days to see if that will make some.
My levels have always been 0 nitrates, 0 nitrites, 8.2 pH, 450 calcium, 12 dKh, 0...