Radion program for nice sps colour

[NanoCat]

I was wondering if anyone has some thoughts or experience on what a good Radion program would be for getting some nice colour back in sps.

I have been getting some nice growth but the colour has faded on some of my sps. I have one radion over a custom 25 gallon. 24 x 16 x 16.5. The light is hung at 8" above the water and I run it up to a 90 percent peak.

I know that water parameters have a huge impact on the colour but I would like to know if anyone has a program that has been working well for them.

I currently run at:
CA: 475 Hanna
ALK: 8.5 DKH Hanna
No3: 0 Sailfert
Mg: 1450 Sailfert

Po4: 0.00 Hanna (I have never seen a reading over 0.00. Not sure if this is because film algae on glass consumes it before I can get a reading)

My ro and tap water both read at 0.00 Po4. But I was able to detect Po4 in the food rinse water that I dispose of before feeding (1.23)

Any thoughts

Thanks in advance.