My sps don't seem to color up what am I
doing wrong?
About my tank
It is a 90gal tank with a 30gal sump
2 lumanarc reflectors
bulbs se xm 250 watt 20000k m58 balast 8hr per day
was using xm 10000k just changed one month ago to
xm 20000k
2 t5 atinics 12hr per day
skimmer euro reef rs 135...