Excellent quality and great customer service. However, remote is not very user friendly. So, like some people, I thought at first that some of the light channels were out of order. I was about to return it and decided to send them a quick email to see if there was a quick fix. They replied within a day or two. :). If the channel light doesn't seem to adjust or does nothing. Press "Full Power" then press "Channel 1" and then press the "-" button about 11 times. And "channel 2" and the "-" button like 11 times and so on for the last two channels. After that, all channel indicators should be off, and now you can start to set all channel indicators. Yes, email them if there is another problem. So far so good for me. Many Thanks. Here's their email instruction: First, click Full Power. Press CH1, then press "-β repeatedly until the light in channel 1 goes out; 2 is off; Press CH3, then press "-" several times until the light in channel 3 goes out; Press CH4, then press "-" several times until the light in channel 4 goes out. Usually the light is off after you have taken these steps. if not, please let me know. The few photos I add show how I use light to move the sea anemone to where I want it. ;)For your health
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