Sps and chalices loosing color

Looking for some ideas why my corals colors are fading out? They all have been in the tank 3 years haven't really made changes its all my sps and a few chalices. I run evo 200w leds and the only real change was from a cal reactor to dosing pumps back in Aug.
Tank 220gal

Cal 420
Alk 3.5mql
Mag 1350
Salinity 1.025
Temp 78.8
Phosphate 0.07

My lfs was out of reef crystal so I did do 2 20gal water changes with instant ocean last month.

Thanks

 

So you're not running any carbon dosing, change out bio-pellets, added charcoal? Is it possible you're starving your corals?

 

This was my issue. How many fish do you have and how often do you feed?

 

No carbon dosing. No charcoal. I have abour 12 fish feed every day

 

A see a few possible things:

Not enough food
Too much light (and could be coupled with the above - more food and your light levels might be fine)
Alk possibly too high

 

When I ran my reactor I ran my alk around 12dkh and now its around 9.5dkh should I start to raise it back up?

 

No; I'd lower it if anything.

 

What kind of fish? large fish? i wouldn't classify 12 small fish in a 220 gallon as a large bioload.

 

Nothing super large the purple tang is the biggest a black clown, 2 perc clowns, hippo tang, 2 damsels, six line, star blennie couple others cant remember everything I have is 3+4years in this tank

 

My guess would be it has something to do with the dosing.
Maybe bring in a local reefer that is up on doing. Consider going back to the reactor to narrow down if that is indeed the problem.