Help! Torch coral dying

[crivero70]

My Torch coral started retracting about two weeks ago and now it's dying. Water parameters are perfect, also have had it for 2 years. Always one of my healthiest looking corals. Dipped it and no improvement. Posting pics for opinions on possible causes or illness. Other corals in tank are healthy including a hammer coral. Any ideas?

Thank you in advance.

 

[TexanReefer]

Iodine dip and move it to low flow/low light

 

[Uncle99]

Looks like it was tasted.
That’s all it grew in two years?
Should have been size of fist by now.
What be those perfect water conditions?

 

[Frizzy reefnewb]

This is just what torches do IMO they don’t last long eventually all mine die and my waters good all the time

 

[Uncle99]

My torches, frogs, hammers all hate low MG.

 

[Uncle99]

These are 4 years old. Came from tiny one head frag.