Bought to replace a lightbulb on my small 3 gallon tank. Perfect! My old flashlight was metal and more durable, but this one has a nice, easy-to-reach click to turn on and off, and is still reasonably bright. I feel like it's a little less bright than the old one, but since it's dead is, I can't really compare. My living plants are very happy. I really like how I can move the light in the mount to position it where I want. I wouldn't put this on a very large or deep tank, but it works great for small tanks. I would say a 10 gallon aquarium would be good for plants that like medium to low light. The blue light is very bright at night (and during the day), almost too bright, but great for glodanio and neon decorations.
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