Res Sea Star - HELP!

[NewfieReef]

Hi Everyone,

I am a new to this forum and am looking for some help with my Red Sea Star"¦
I have been out all day to come home and notice my tank is in rough shape and I don't know why! First problem is my Red Sea Star two of his legs have what look to be gashes or pealing going on"¦ Now two of my corals look like they are dyeing"¦
Water Parameters are:
Salinity: 1.026
Ammonia: 0
Nitrite: 5.0 "“ 10 --- I can't tell the difference between the two
Calcium : 520
dKH: 11 or 196.9 ppm KH


I have tried to add pictures too, I hope they work!

Please help....

John

 

[NewfieReef]

Oops Nitrite: 0
Nitrate: 5.0 - 10.0

Also, I guess people are going to want you know what type of fish I have:

Diamond Goby
Mandarin Dragonet
Clown
2 Blue damsels
Blue Tang

Both my Mandarin and Diamond eat brine shrimp and bloodworm's.