SG of 1.00 is not brackish, that is fresh water... in fact 1.000 is distlled water
double check your hydrometer, make sure you take into account the water temperature when taking your reading ... as the temperature of the water effects the hydrometers calibration.
I believe brackish should be around 1.010 to 1.018
As for brackish plants, you can try some of the hardier "hard water" fresh water plants, or something like Eel grass maybe, which is a
sw plant.
by the way
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