I supposed to give 1 star but I gave 4 stars because the 1st one that I bought 2 years ago is still working perfectly. But the 2nd and 3rd one is not that good. I'm now in the process of returning and exchanging it.

I have been using these lights for over one year. One issue, one of the 2 drivers failed(ballast) or burned out. However, the company fixed it immediately. I also have two other similar looking lights they are not ALL the same. Lighttunnel version is by far more suitable for SPS. I am growing SPS LPS softies no problem. I have over 1000gallons of aquariums African Cichlids and Reef system. I maintain, install and have a store. These are my go to lights for function and cost effectiveness. I am not saying they are the BEST but they are darn good lights. The customer service is hands down superb.

Deeply penetrating lights compared to my previous LEDs. Fans are near silent. Inverts love them.
Note: they cast an array of colors, not the even, stark daylight look I was used to. My wife lives the colorful new look, I'm getting used to it. Also, the spread seems to be a bit narrower front to back. Perhaps a trade-off for the depth penetration.
Using 3, ~6" above the surface, on a 210-gallon display tank.

Just Added these lights to my tank that I built into my bedroom wall. I'm no professional just your average jack of all trades master of none. They are very bright and good quality. I will say that are very sensitive on the turn dials so tends to make it a little difficult to adjust to lower settings for coral acclimation. I currently have mine set at 20% wht and 50% blue. Not sure if my Corals will grow as of yet. I'm new to the reefing hobby so all I can say is that they look good for now. I will update as time progresses.

""""Update"""" on lighting system.....
So far, so good! Once I figured out the best % of wht and blue (which my wife was getting annoyed with... lol) The corals have acclimated to the lights and have opened up with full extentions on all the polyps as well as annenomes. I Wish there was a built in timer on these but for the cost I can't complain but I ended up starting with blue at 35% for an hour in the morning then whites kick on at 20% for 8 hours followed by blues closing out the day at 35% for 2hrs. I did recently end up purchasing a generic very low wattage red led just for viewing over night. Pictures are attached. Happy reefing!!! :)

i purchased 2 they came well packaged it was easy to setup hanging kit. the lights themselves are working great the only thing that's a little irritating so far is the plugs don't stay plugged in very well but if not touched it stayed on

UPDATE: I accidentally dropped the light into my tank and burned out the internal power supplies I contacted the seller asking for replacement parts and they sent me out the parks for free even though the damage was 100% my fault Top Notch company definitely recommend and would use again in the future.