Answer: There's a great article on how to start a tub water garden, including easy plants for beginners, at this link:
If your water is highly chlorinated, then just let the water sit in the tub for a few days before adding plants, and it will reduce the chlorine content of the water. If you were ever to add a fish or two to your tub garden, you'd need to neutralize the chlorine with a special product -- or fill the pond with springwater! Enjoy!
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