corals got tanned

[barchtruong]

Funny how all my corals turn a shade darker than when I first got them at the reef shops.
They are all under 2-150w MH and 2-130w PC
All of them show a dark tan color on them.
Just wonder if that's healthy or are they damaged.
All my corals are growing big and look extremely happy.
thanks

 

[paulcoates]

check your nitrates and phosphate

 

[jrthomas40]

pigmentation is natures way to protect itself from the sun...thats why you see so much color...if they are growing and healthy then you are good to go