Purple Jedi mind trick?

[GlassCityReefer]

My Jedi mind trick which this forum helped me save last year has turned to a purple color. I don’t know if it needs more light or less. I have an AI prime he and I run pretty much the signature series of Karen Vasquez from Aqua Illumination. Should I change to a different one? Could something be off with my parameters? They are
Alk 8.2
PO4 .08
No3 3
Ph 8
Magnesium 1150
Calcium 460
I know my magnesium is a little low and dosing that up and I just started using Kalkwasser to keep alk up. Everything else seem to be doing well in my tank. Any advice is appreciated.
I took the picture before the light came on with a flash so you get the color it is. Thanks

 

[saltyhog]

Is that a lights off picture? Where is it in your tank? What lights? What are your parameters?

Mine was very hardy but it would get darker if stressed or unhappy. You haven't seen any pests have you?

 

[Hemmdog]

The mag is critically low. Get that up right away to at least 1300. This will cause all sorts of problems if you don’t. Mag is just as important as alk or cal.