If these are what you mean
http://www.urbanext.uiuc.edu/houseplants/types/scindapus.html
Then, for almoast all of the years I was growing up there was usually a few pieceses in atleast one, if not all tanks. I used a few branches of it when I tried to breed bettas as well, good support for bubble nests but a pain when the female and later male had to be netted. But then any plant would be in that situation I would imagine.
I do not know if that ph would affect it, I dont know if the ph was ever even tested in any of the tanks.
If those fish/the snail eat plants then they might eat that plant as well. The leaves arent paper thin though, so the fishies might prey on other plants. If you worry, maybe drop a slice of yellow squash in the tank. Im not sure about zucchini, it seems to go soft and gooey faster than yellow does when left in a baggie in the refrigerater.
If you do get one, I would suggest you keep the main plant somewhere outside the tank, and break off all/however much you want of the branches that reach over the side of the bucket it is in. You can either plant it or leave it free-floating. It grows roots quickly, but gets algae on the leaves quickly as well, but that is easily wiped off.
Good luck.