Anemones not eating

Nutrient problem as too much nitrate or nitrite or excessive protein. Do you have a skimmer and what is your water change schedule like?. 15 fish in a 75 seems a little snug. Do you have any issues with large pH swings?

 

One since Mar 2nd pic and first picture for a month.

I will try raw seafood

Previous light was a Marine land LED. Definitely not as bright as this one

 

Nirate and nirite were extremely low. I do have a skimmer about 3 months old. No issues with pH.

 

If their tentacles aren't holding food, DO NOT try to feed them anything other than something like coral frenzy, oyster feast, reef rods, etc. Trying to feed large pieces will a) stress them out more and b) cause water quality issues if they aren't being eaten.

Once the tentacles are unable to hold food, this is typically the first sign that an anemone is on its way out.

All you can do now is try to provide ideal water quality, good light, good flow, and avoid stressing them in any way possible.