Macroalgae and moss ball are pale?

[o.Ohill]

I have been noticing for a while how pale my plants are. They both came from Mustafa green but aren't as vibrant anymore. I tried looking at other forum posts to see if it's too much light/too little light/not enough nutrients/too many nutrients but really can't tell. The mossball seems to be slowly growing, with a pale outer layer and the inner core still green...? Does anyone know how I can restore their color/health? Thank you!