Coraline algae growing on Chaetomorphia

[whatcaneyedo]

I have coraline algae growing on my chaetomorphia. Does anyone else think that this is odd? Chaeto has never grown especially fast for me so I guess the coraline is just out competing it but I still find that hard to believe even though its happening right in front of me. I'm wondering if more intense lighting for my refugium would help with the chaeto growth. I have a hard time believing that it is nutrient deprived because I still have patches of bryopsis throughout my system.

System info:
270gal system with 8 fish heavily fed
becket skimmer rated for 400gal
2x16W CF 6000K spotlight bulbs lighting refugium
1 cup rowaphos changed monthly
10% weekly water changes
Salinity 1.025
pH 7.8-8.0
Phosphate 0 (elos)
Nitrate <1ppm (elos)
Ca 440ppm (elos)
KH 4 meq/l (seachem)
Mg 1450ppm (elos)

You can see the pink/purple strands that must be coraline on the chaeto

[mark]

I get some on mine, just rip it off on throw out.