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Baths and swimming pools in the deep blue hair what it is?

kscbsxh2010-01-28 03:01:27 +0000 #1
How does it use to the people is?
Hongsheng Korda2010-01-28 03:06:24 +0000 #2
blue copper sulfate, or an angel. Are algaecide, copper sulfate harmful to human beings, angels blue (complex copper) did not harm. However, due to the added volume of a small, and will not affect the right people.

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