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Thread: KH and plants
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post #12 of (permalink) Old 04-18-2012, 01:49 PM
Planted Tank Obsessed
cradleoffilthfan's Avatar
Join Date: Jan 2009
Location: Eureka, California
Posts: 323
I never thought I would get a chemistry lesson at a fish forum lol. I never knew what the ph of carbonic acid was at normal atmospheric conditions......My kh is like 7 or 8 and I never had problems growing aquatic plants.....co2 was still effective, you would just need more of it. Also, aren't ph swings highly likely without any buffers? I never ever ever would use 100% RO/DI water. There are no buffers at all, nothing to keep the ph stable, that's why they sell buffers to add back to RO water to reconstitute it. I would at least keep the kh at 3 or 4 degrees. 0 kh sounds crazy to me.
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