LED Aquarium Lighting 120w Asta 120 Full Spectrum Programmable for 24 inch Fish Tank Saltwater Reef Coral with Gooseneck

TL:DR Bad optics, not really controllable, and poor/nonexistent customer service.Purchased for a small nano-cube sps tank. Light could be ok for the application, though several fundamental flaws caused me to return it. First of all, with an open top tank, the light produces a HIGHLY visible grid pattern on rocks and sand, even with significant surface agitation (height above tank substrate ~1m). This is a serious problem with the optics. Secondly, although the light turns on and off with a mechanical timer (im using a reefkeeper lt controller), when it turns back on the channel intensity resets to the default setting (i.e., there is no way to permanently set all 4 channels). This issue can, I assume, be rectified with the proprietary wifi controller, however at this time there is no option to buy the controller with anything less than a 6-8 week shipping window... This is a serious problem unless you like the default setting, which in my case is WAY too bright. Lastly, I contacted the manufacturer and their US sales department to try to purchase the controller directly with expedited shipping and neither responded within 10 days. Thanks for the option but I'll spend the extra 50 bucks and go with Kessil...

First I would like to say it does make the corals pop similar to a kessil. The problem I've had is if you plan on using a standard on/off timer or controller the light will flash on, off, then on again. So if you have an open top the fish might get spooked and jump out. Also like most LEDs they are overpowered so the lights have to be turned down, which is different on this model. One knob changes the channel, the other changes the intensity of that channel. The only way to fix this is to buy a $150 WiFi controller plus $20 for shipping and the long wait to get shipped from China. I thought maybe the fluval ramping controller would work, but I was wrong. If they would've made the knobs work like the black box LEDs this might be a different review.