Gelo at bamboo's (dracaena sanderina) root?

The first log of my bamboo has started becoming yellow, very soft, too flexible, and gradually dies. I looked its root and something like a gelo has covered it, preventing it from taking in water or breathing. I carefully washed it out and most of the gelo left opening the whole root again. What is that and what can I do to prevent it from happening?

Gelo at bamboo's (dracaena sanderina) root?
Use distilled or filtered or spring water and change it once a week. Don't let anyone tell you different it wants lots of light but not direct sunlight. Keep the water about 1" above the root line.





Keep water fresh by changing it every week, and always keep water levels at approximately an inch from the base of the canes. Lucky Bamboo prefers plenty of indirect sunlight and room temperatures at 65-70o. Although opinions differ on feeding, your Lucky Bamboo is a living organism, so it makes sense to occasionally add a mild solution to the water such as African Violet fertilizer. Since growth can be controlled by feeding, small amounts of fertilizer will keep the plant at a manageable size.


*********NOTE**********


Why Are the Leaves Turning Yellow?





Two of the most common factors are 1.) too much direct sunlight; and 2.) too salty or heavily-flouridated tap water. Give your new Lucky Bamboo a thriving start be sure to keep it away from direct sunlight, and water only with filtered or natural spring water.


http://www.chiff.com/a/lucky-bamboo.htm