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the only thing is that if you see white dust around, you should buy purified water to use it, but it is not the drawback of this product, it is a common problem for any ultrasonic humidifier, which
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i so wanted to give this product 5 stars, however, we have white dust in our babies' room (it even got in to our cd player).
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the only problem i have with it is the calcium/lime dust that covers the inner portion of the product.
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because this humidifier is sold separately from a filter, some people may have problem with dust in the air combined with the water spray.
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the only thing i really don't like about it is the awful white dust it produces and i've used it with and without a filter and still get the same white dust.
Positives:
Quiet, Excellent Affordability, Attractive Design, Overall Tank Size: 2.1 Gallon
