Lighting

I know this is a really dumb question but I really just have not other Idea what could be going on here.

I have tested the parameters in the tank 160 reef 30 - 40 gallon sump. the tank has been running for 10 months now reading over the last three weeks
sg 1.027 read with both hydrometer and refractometer
am 0, nitrite 0 nitrate 10 ppm
cal 385 - 400
alk 9.6 - 10.5
mg 1350
phosphate 0.00 - 0.05
tank temp between 76.7 and 77.9
...