Another quick update: most of the SPS are encrusting nicely. Not super fast but the colors are finally showing up. I have not done a water change since the tank was setup but I plan to do a couple of 30G in the next two weeks.
Alk is around 8.3 very stable. Floating up or down by 0.1 on a weekly basis.
Cal is around 420, dropped 10 in about 1 month.
Nitrate is finally 1 ppm. It took me almost two month to finally get it detectable via Red Sea Pro kit.
Phosphate is 0.13 ppm via Hanna ULR checker.
Another update. Most of the frags are still growing downwards. Colors are mostly stable and pronounced. I am thinking about ramping up the light intensity from 45% to 50%.
Water test results below as of yesterday:
Alk: 8.4 DKH
Cal: 425 ppm
Nitrate: 4 ppm
Mag: 1,040 ppm This is pretty low but I am not sure if the result was accurate because everything in the tank looks pretty good.