Ok, I have no clue as to what is going on with my tank.
Everything I check is normal,
NH3 0, NO2 0, NO3 0, PO less than 0.25 (the test I currently use is hard to read and although I think it is only slightly above 0, the next graduation is .25), salinity 1.025, PH 8.0, dKH 11, CA 420, temp...