hi mechgobi. ive upgraded to a slightly bigger tank and start using an uas instead of ats. both are pretty amazing on NO3 controlling. I feed my fish everyday and the NO3 has never been above 5. one disadvantage is that the KH really drops fast and need to raise it up. not really useful on algae control actually. maybe because my tank is still not really stable.
as for lights, i used both led on main tank and ats/uas. 60w "full spectral" led on main tank. warm white on ats and now red light on uas. the ats is proven useful and still testing the uas.
anyway, so far my corals seems alright. only problem is my skunk shrimp. keeps disturbing all my corals...