The Planted Tank Forum - View Single Post - Safe T Sorb lowered GH but not KH?
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post #5 of (permalink) Old 02-03-2013, 05:14 PM
Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 10,496
STS works very fast to remove KH.
Tap: about 4 degrees KH.
Tank (88 gallon tank) with STS (40 lbs, new) hits zero in just a couple of days.
When I add baking soda to restore the KH to about 3-4 degrees it again hits zero in just a few days.
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