Great honest review. Id recommend you try out the ledzeal.com Malibu s model with the custom led layout. In each comparable size they are about 100.00 less then the v2 and have both a wired controller AND wifi app that allows control via phone or other mobile device.Sorry for the delay in updating.
I do think these are a decent option. They seemed to function well, you were able to add dimming points which are a step above other black box leds. I did notice coral growth, and color seemed as good as my previous setup.
I do think there needs to be an adjustment to the controller. An app or improved controller would be a welcome improvement! It is very basic and somewhat difficult to program. The given instructions were difficult to understand, but I believe this is being improved, if not already corrected. An app would be amazing, and probably not difficult to implement.
Although they are a nice fixture, I did decide to put them on the shelf. I am currently using GHL Mitras.
Overall, if you are looking for a decent light on a budget, this is an option. I am a huge fan of Ocean Revive Leds and would recommend them to anyone in a heart beat. If you want more control and similar budget as the K7, I would look into Reef Breeders V2. It has a more refined controller and more dimming points. I am not hating on the light by any means, I just think there are some better options for similar or cheaper pricing.