The Planted Tank Forum - View Single Post - Using Oil-Dri for cheap substrate?
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Old 09-30-2012, 05:14 PM   #19
celaeno
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I tried out the STS, but it's so dirty that rinsing is never ending. I took it out of my tank and it left behind a muddy (brown) residue and smell everywhere. I wiped the tank down with paper towel and there is still a muddy smell. Is the residue harmful to fish?
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