Fish & Aquatic Supplies 2 Gallon Fishbowl Undergravel Filter

Definitely run this for a day or so in the tank before you put your fish back in because it turns the water almost black with all the black carbon it puts out. The extra carbon didn't harm my fish at all but it didn't seem healthy. I think for the price they could include an air pump with the filter but nevertheless it plugs away and works pretty good at keeping my fish water less cloudy and not disturbing my male betta. My recommendation is to buy a fish tank that includes a filter, it will be much cheaper and fit your tank better since this filter pops out of the top of my tank.

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