The Planted Tank Forum - View Single Post - Using Oil-Dri for cheap substrate?
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Old 09-06-2012, 02:25 PM   #24
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The sts sucks carbonates out of the water like a vacuum. This will continue for quite a while since you used 40 lbs. My suggestion is to buffer it quite high each water change to let the sts charge itself quicker. I used only a cap of it, and it still took a few weeks to stop
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