The Planted Tank Forum - View Single Post - Using Oil-Dri for cheap substrate?
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Old 08-25-2012, 10:04 PM   #12
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@ diana .. what is liquid rock?

I really should have "pre-charged" the STS when I was soaking it but the long soak wasn't really intentional. Just had too many other things going on to deal with it. And I was using the copious amounts of rainfall to help clean it.

So hopefully between the oyster shell grit and baking soda I keep the Kh up. Guess I'll find out.
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