I probably shouldn't say this in front of aquariasts that are so ardent at maintenence BUT...I use mixed R/O water in my planted tank and unfortunately, my source is approximately 30 minutes from my home. Subsequently, I sometimes lose a little too much water from evaporation...
Well, every time the water evaporates a few inches, my sword goes into low water mode and blooms. The blooms produce little plantlets that will create new plants. So far I have gotten about 4 baby Kleiner Bars this way. I know this is just a shortcoming of my maintenence schedule (some people would fall out of the computer chairs if they saw my ferts schedule), but if it works, why not???