I have 6 of them, bought from Amazon.
https://www.amazon.com/Galaxyhydro-...srs=10242888011&ie=UTF8&qid=1466446919&sr=8-2
Build quality is very good- they feel solid and are quite heavy, indicating a decent sized heat sink.
White channel and blue channel are independently controlled via a solid feeling knob. However you can only control to about 20% power then it shuts off.
The lights are quite powerful. At full strength on both channels the light is bright and pleasing, showing off the tank nicely.
With blue only (which I run most of the day) you do get the florescence which is especially noticeable with green and red corals. I think the spectrum is not quite the same as actinic which definitely shows a more pleasing fluorescent effect.
One light is easily about to light a 2" section of tank, perhaps 3".
These lights cannot be directly controlled with APEX. I just set blue and white channels to 100%, then turn on blue all day with intermittent periods of added white.
I also bought the grow light for my chaeto:
https://www.amazon.com/Galaxyhydro-...srs=10242888011&ie=UTF8&qid=1466447578&sr=8-1
This one has no control knob but is also quite bright and well made. The spectrum is much more red because it is intended for plants.
Bottom line- build quality is good, price is great, efficiency is fantastic, but less features than the premium brands. I would not hesitate to recommend these lights to a budget minded reefer, but these lights are bound to disappoint the high end buy-the-best-at-any-cost type of person.
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