04-05-2013, 06:09 AM
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Originally Posted by Sanguinefox
Isn't this just one of those things where it can help with something but isn't really a cure? It's like, if you have a problem with green water, you find the source, eliminate the variables and done.
If you get a UV sterilizer all it really does is offer a quick fix and you are screwed once it stops working if you didn't fix the initial problem. I hear some people use this on fry tank set ups though to help with the overall batch but ...I don't know how true that is.
Not all imbalance are permanent. For instance, a tank could receive too much direct sunlight, but only in the summer. But in general, I agree, it's not really needed - many a fish tank gets along just fine without it.