Coral sickness

[35gcube]

Ive noticed dark tissue on my zoas and gsp. What is it? Thanks

 

[Mr. Mojo Rising]

Looks like they are browning out. This happens either because of low lighting, or very high nitrate/phosphate level in the water. These are the usual 2 to check and correct.

 

[35gcube]

Looks like they are browning out. This happens either because of low lighting, or very high nitrate/phosphate level in the water. These are the usual 2 to check and correct.

I just got them, is it my tank or the seller's?

 

[Mr. Mojo Rising]

I just got them, is it my tank or the seller's?

If you just got it , then would suggest to give it a few days to see how it reacts.... maybe it is the stress of the move? Lets see if others have other comment