I'll start with the bad ones because I don't think they're a deal breaker as it might just be my setup...I have a 20 gallon tank that I've tried this on. The bracket on the frame top of the tank is large enough to accommodate the frame, but without anything inside the bracket can tip over. I could use dense foam packing to solve this problem. If you have attempted to mount the bracket over the aquarium's bracket/bracket, the screws are too tall to hold enough of the bracket/bracket. Not a deal breaker as I plan on getting a glass lid for my tank and putting it on top, maybe lifting it up a bit to dissipate heat. For those with rimless tanks, this isn't a problem at all. Good (actually the best)... the light output is impressive! The photos show where the tank is lit by an external floor lamp (amber light to the right of the tank) and where I had this full spectrum LED on top of the tank (bright white light). I also have a video that walks through some of the color settings available. Since I don't have frame-by-frame recording, I can't show off the amazing dual timer feature. Overall this is a great device with amazing features and incredibly bright "daylight" light!
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