How do I save my bamboo plant from dying?

My husband bought me one of those lucky bamboo plants that come in a vase like container with water and small stones in it.



Recently one of the stalks of bamboo has turned yellow on the end like its dying. Its not that it doesnt have water and there's still plenty of room in the vase for the roots.



What do I do?

How do I save my bamboo plant from dying?
The plant is a Dracaenas sanderiana.

The plant needs its water changed weekly and it will live happily on old fish tank water, if you keep fish, since this will keep it fed without over doing the fertilizer and it has been dechlorinated.

Yellow leaves are possible with overfeeding or over exposure to sunlight. Change the water immediately, move the container further from the light, and don’t feed at all for several months.



This plant likes high humidity and nonflouridated water. If you are using tap water try distilled or bottled water. Just add a couple of drops of aquarium plant food to the water you use to refill the plants container. But do not feed every time you change the water. Over feeding is very harmful to plants especially such a slow growing one.
Reply:The plant was never intended to live in pure water indefinitely. It's just like cut flowers. If you want to keep it for a prolonged time you need to transplant it into soil.
Reply:most plants turn yellow at the tips as a sign of to much water. if this is true for bamboo plants too then there is your answer. just dont water it as much or put a small spounge in the bottom of the vase to soke up some of the water. seems to work for our plants.