Dead corals?

[troubledfemale]

I have about 12 live corals in my tank however I have 2 that have died

and 1 more on it's way

I was wondering :notsure: if that woul affect my tank in any way. All the fish seem to be fine

but I just want to make sure if they wouldn't be affected by the dead corals

 

[troubledfemale]

i'am new to this so I don't have any equipment to check all that stuff the only thing i do have is to check the salinty and I go 1-2 a week to the place where i bought my tank and they check my water and say there is nothing wrong with it i have even gone to get a second opinion and the same , a long time ago my nitrates where very high so I did a partial water change and since then the water has been fine