i do a water change weekly, 15 gallons. sometimes every two weeks. that whole time i was running iwasaki 15,000k 175w bulbs on a 9 hour cycle. a geo 618 calcium reactor. euroreef rc-80 skimming pretty wet.
i keep my sg at 1.025
nitrates at 0
calcium 430
alk 11.5
phospate <.25
i feed pretty heavy