is that why my torch coral tissue die?

[reefmedown]

I have been put them on sand, yesterday I found out some parts of tissue die , will they recover? I have ask same question about my dendrosphyilla before, I saw little improved on my dendrosphyilla. I dk about torch.

[Dkuhlmann]

What are your current water parameters. I'm pretty sure that your tank was not properly cycled from the beginning. I would guess this is also why your fish are dying.