High pH!!
I don't know, but tint slightly? I'd be skeptical.
What kind of plants? Do you have any floaters like WHyacinth or WLettuce?
~ jan
I know, I'm scared to try. I think maybe it tints with tannic acid.
Plants: Mostly marginals. Just added water hyacinth yesterday.
Removed all the elodea till the pH thing settles down.
Joan
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