The Planted Tank Forum - View Single Post - Safe T Sorb lowered GH but not KH?
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Old 02-06-2013, 04:04 PM   #9
hbosman
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When I started using STS about a year ago, it lowered my KH from 5 to 4 and no change in my GH. After about a month, my KH stopped lowering. So, its bubbering ability is only temporary in my estimation.
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