Well something is seriously wrong in the tank, all my lps has perished and my suns have just dissolved, everything checks out but there is also a strange slick on the water surface.
I am going to let it run as is for a few weeks, remove the dead and dying stuff and then start skimming and using bio pellets, carbon and do a massive w/c. Also going to scrap the 'sump' due to soon to be born child.