Why is my coraline turning dark red

[reefer125g]

My coraline was pink and in the past mo it is turning a dark red ? ph 8.2 - .02 at night
kh 12
ca 420
mg 1350
sr 12
sal 10.025
temp 80.0
lighting 3x 250 watt 14k ffom 12am to 830pm
2x 40 watt att from 7am to 930 pm
1200 gph return 3x 1100 gph seios 1x tunze 6060
ev 180 skimmer
pm reactor
tank is a 125g sps only with a 30gal sump.

 

[etszoo]

Wish I had more red coraline. How long have you been running the 14ks?

 

[reefer125g]

6 mo long

 

[smcnally]

Are you sure it isn't Cyano growing on it? Is it only down low where it is turning red? I've noticed Cyano seems to start by the sanddbed and work it's way up.

 

[reefer125g]

Its coraline its all over and hard and started as spots on the glass.

 

[Liam]

It is probably just a different strain of coraline.Coraline algae comes in all kinds of colors and growth patterns,it is probably just this particular strain is spreading more effectively than the lighter purple strain you also have.

 

[reefer125g]

I wish I could find a way of slowing it down it is making my tank look dark.