Good afternoon fellow reefers.... I do not know wants happening? My 29 year old purple coralline rock is starting to turn kind of a brown color. I have been fighting heat in my system for some months now. None of my completely covered purple rock looks very bright purple anymore. Just a kind of drab brown kind of color. Alk great 9.8. just checked nitrates 6.0 kind of high, PO 0.08 kind of high... I am Carbon dosing for well over 3 months now, up to 3.6 ml per day. I do have a little red cyno just like most do... lol. I have about 260 lbs of live rock.. And it was so stinkin deep purple... Anyone have any idea what would cause this.. Could it be the heat..! I do apologize from making this sound so generic, but I am at a lose here. Thank for any help at all.
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