These lights do exactly what they were designed to do. It's wild to see the light move to the music, especially classical music (try Chopin's Nocturnes if you need to relax!). I have a 40 gallon grow tank so I bought two 11 inch lightbulbs and glued them to the glass lid which lights the entire tank. However, the application that works via Bluetooth to control the lights is buggy when setting up. the lights go on and off as planned, other than that I am completely satisfied and if I get another tank I will definitely buy them again.
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