Homemade Water Filter Materials Why Did My Homemade Water Filter Gave Out Yellow Water?

Why did my homemade water filter gave out yellow water? - homemade water filter materials

I saw a little water in my water and when I then became yellow

I am the sand are gravel, gravel, coal, sand, beach sand clean I mean all materials, about 13 times



I was wrong, here is my source if I these
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