That's what I kept saying to myself before until I finally splurged on 2 XR15's and wow... I am still blown away by the difference in my coral growth and happiness
The spectrum of the Sky is specifically geared towards coral growth, so probably not the best option for freshwater. That said, there are some fantastic freshwater specific lights out there like the Radion freshwater, Hydra/Prime freshwater, and Kessil freshwater LED fixtures, just to name a few.
The kessil Ap9x is better, plus I hear terrible things about this light already, not a good sign, if kessil made a light like this I would buy it but Neptune making a light? No I don’t think so I rely on my lighting to much to buy a Neptune light considering I heat this feels cheaply made