At least we will have an Aponogeton adapted to really, really hard water.
;)
There is a Crypt, by the bye, which can thrive in what seems to be a
hardwater, almost brackish environment in coastal Thailand. Somewhere "they"
have published a shot of Cryptocoryne ciliata which seems to be tolerant of
a wide range of parameters. One has been pictured a couple of feet tall,
having grown out of the water in at least partial sunlight!
Ya gotta promise not to run off to the Everglades and plant it. It might do
better than many of the Crypts (affinis excepted) in a native tank.
All the best!
Scott
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