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Re: [AGA Member] CO2 concentration in Hard water
REF: "can plants do OK in harder or softer water? "
Hard water is good. My Madagascar Lace plants seem to like Madison, WI
hard stuff (GH20+ / KH17) which includes a wealth of trace elements.
Brightly lighted aquaria with fast growing plants metabolize real fast
and can reduce GH to a great extent, (calcium for cell structure).
Though fast working plants use lots of inoculated CO2, I think they
concurrently get some of their carbon from KH (calcium bicarbonate) via
biogenic decalcification. When this happens, KH is reduced as well.
Pretty dynamic stuff. Abundance of calcium (GH), bicarbonate (KH) plus
traces helps to reduce risk of running into "limiting factors". With
softer water, your optimum growth condition "window" is smaller, so to
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