The Planted Tank Forum - View Single Post - bringing up Kh ,do I use CaCO3??
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Old 12-23-2002, 10:52 PM   #1
cvarcher
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My tap water has very low Kh and Gh which I guess is good.So to bring up the Kh from say 1 deg to 4 degrees am I suppose to add Calcium carbonate?
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