Can't go wrong buying $10 but make sure it doesn't have any vent spatter which ruined my first purchase. Water splashes caused rust and eventually stopped working after 8 months. I just bought a second flashlight and will be keeping it higher up and away from bubble spray which will hopefully extend the life of my second flashlight. I mounted it over a small 2 gallon bowl and would probably work better for a small rectangular tank as the flexible arm can't make sharp bends to direct the light exactly where I prefer it over the bowl.
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