Well tonight when I got home, there was a pretty bad smell in the room with the tanks. Sadly, my anemone did not make it

I wish that I had made faster reactions to save him, but unfortunately...
It's pretty saddening that this happened. A mistake that was made by the previous owner was my problem. I accept full responsibility though, for "assuming" that they were "OK" together.
Flightpipe - When this first started, Saturday morning, there was a couple responses, and I went with "he may be eating whatever the anemone is expelling" and "Keep an Eye on him".
(not trying to blame anyone). I had little information of the cons of having the Starfish in the same tank.
When I got home that night from work, I seen that he was on him again and then removed the Starfish and put him into another tank. (Posts in-between were made from my phone while at work, and sadly, I could not see what was actually going on at home. I was on the web all day researching the issues).
As for the Lights, the tank came with what looks like an older Current Nova Extreme T5 X2, with a 10k and Atininc bulb/s. I ordered a new Current HQI/T5O 2x250 that should arrive tomorrow. I know the lighting was not up to par, even at the bare minimum of what this tank needs.
Water parameters are:
Temp - 78 ~1-2 Degrees
pH - 8.2 <---a little low
Salinity - 1.024-1.025
Alkalinity - 7
Ammonia - 0
Nitrite - 0
Nitrate - 80ppm <---Still too high, but it is dropping
Nitrogen - less than 1 ppm
Phosphate - ~6 ppm
Strontium - ~7 ppm
Calcium - ~310 PPM
Magnesium - ~1150 ppm
Most of these these numbers are fluctuating as I am trying to make the corrections to the tank, as well as get to the source of the cause/s. I'm considering moving the livestock to the quarantine tank so that I can do more frequent water changes until the tank levels out. What are your thoughts?
BonsaiNut - I'll say it again, i hope you didn't take my response to your post the wrong way. I always have and always will accept answers/recommendations, whether I am wrong or right.