A lot of time I have water that was left in the kettle from the previous boiling, and I want to replace them - so a good use would be to water my plants - does it matter to the plants if the water were pre-boiled?
What I can think of, is that it can matter since boiled water has less dissolved oxygen - but I have no idea if for good or bad (or none at all).
Also, if it does matter in someway - is it general for plants, or for specific families?