Quote Originally Posted by pinkdolphin113
I assumed letting water stand for 24 hours was to allow the chlorine to evaporate?
Chlorine, as many know, is added to water to kill bacteria and parasites making it drinkable.
Bacteria are required, in terrestrial sediments, to break down (or fix) chemicals which are consumed by the plants.

This means that giving chlorine filled water to ANY plant can significantly affect growth.

Chloramine, on the other hand, is a combination of ammonia and chlorine (much more stable than just chlorine). This acts in the same way as chlorine levels (bacteria depleting/quick evaporation rates) so can be left to stand for ~24 hours, too. If you're lucky enough and the ammonia stays within the water after the chlorine has been evaporated (don't know if this is possible), you have a great nutrient for your plants.

Simply letting the water "stand" will cause the chlorine to evaporate, but creating a lot of turbulation can allow it to evaporate quicker.


Pink.
This is why it is an old wives tale. I switched from water that stood to just using it as I needed it, if it had stood so be it, if it was fresh out of the tap so be it. I actually think growth was better on the water that did not sit.
WashougalWonder Reviewed by WashougalWonder on . Old Wives Tales Ok folks, I am so burned on some of the old wives tales. I want folk like Old Mac, Rusty, etc., to dispel the mistruths out there, we are seeing them refuted in posts, let's put it all in one place. My favorites. "You gotta hang the plant upside down to cure." This is purely convenience. It is just easier to hang the stems upside down if you choose this way. "The 12 hours of light make them flower." Not, it is the darkness that makes them flower. "If a hermie pollenates another Rating: 5