SPS Browning Issue.....

[GreyDC]

Question - Gotta a nice large yellow/green porites but unfortunately it is starting to turn brown.......Saw this yesterday but didnt think anything of it until today when I saw that the entire coral is getting browner. Havent run tests yet but was planning to do so tonight. Anyone have ideas of what may be wrong? Phosphates?

 

[derekman]

phosphates is the most likely candidate. it is supposed to be very good for the zooxanthallae but, unfortunately they are brown. also P04 stunts skeletal growth. check it out.

 

[GreyDC]

Thanks Derek!!

 

[DSMpunk]

They can brown out it the lighting is insufficient too.

 

[pscheel]

Does flow also affect color too?