Do you prefer the heavy blue look, shallow water low kelvin natural, or in between?
Blue heavy:
2 Blue+
2 true actinic
Middle of the road
2 blue+
2 coral+
Natural high noon shallow seas
2 blue+
2 giesemann tropic 6500k
Don’t fret over nuanced differences in growth from combo to combo whichever you go with...it’ll be negligible. The blue heavy mixture would read a little low on a par meter but that’s just because even the good ones report 10-20% low in the 400-420 Nm range.