Ah ok. Mine is mid way under ATI T5. Reason I asked is that when I ran it with high nutrient, polyps on the body would be green and the tips would be white. But under lower nutrients then all the polyps would be white and body would be lighter purple. I like the deeper color look with higher nutrients on this one. You can also see the sheen green looking on the body too depending on lighting which is kinda cool. Especially is it's straight actinic LEDs.
Interesting observation !! The reason I started this conversation
Room is because of my PM being browned out but showing slight green sheen as you described . Also I am running reef britebtech leds for longer duration which might be contributing to the green sheen as you described .
I should reduce that reef brite duration and see if it makes any difference .
Also need to lower nutrients to see any effect and get purple coloration now I believe .
Regards,
Abhishek