I wanted to wait until the thing works and then write my review. I have a 36 gallon tank that had a cloud of bacteria in it. I've tried chemicals, frequent water changes, and different filters. I saw the reviews on it and decided to give it a try. I plugged it in and noticed a difference after a few hours. It's been up for two weeks now and it's like a new tank. I hold it all the time I highly recommend this product.
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