If there is something dissolved in the H2o, it will remain in the H2O after the water has evaporated.

ex. fill a container with salt water and boil off the water. You will be left with a pot of salt.
malabar Reviewed by malabar on . Is it necessary to evaporate plant water? I heard before that if you want to take out something that the plants don't need all you do is fill a gallon of water or any type of water container and take the cap off and let it sit over night to evaporate something in the water. Is this necessary? :rastasmoke: Rating: 5