joannaqcw, you sound as though you know much about this. Your post sent me on a search mission - entirely for my own edification - and here is the LINK to a site which you might find helpful in your search for an answer to your question.

Hibiscus Seed Capsules Seed saving is a lot of fun and it's easy to do! This is how I do it....and these are general and universal instructions. Mother Nature is pretty easy to figure out if we keep with the idea that SHE needs to keep it simple too. Take a good look at a flower. When the flower fades leave it where it is, do not remove it. Eventually at the base of the flower there will be some swelling. This is where the seeds are forming. Do keep the petals where they are and let them fall naturally...I don't touch it or bother it, I just leave it be. The base of the flower will swell even more and soon you'll notice that the flower stem and the swollen base are turning a papery-brown. This is a very good indication that the seeds are almost fully ripe....in effect the plant has achieved it's goal of reproduction for that flower...it has produced viable seeds and no longer needs to expend energy to keep it alive, so it doesn't sends it's sugars and water up to the stem anymore. That's why it's turning papery-brown. It's no longer being supplied with nutrients and so it's dying back. The drying action will continue and as the swollen pod continues to dry you will see it start to open....some pods will open in a starry design, plants like poppies create a ridge of tiny little circles near the top of the pod....they make themselves into something like a little "salt-shaker" (sorta...but you could imagine it.) All flower pods will open in some manner when the seeds are ripe....it's so they can disperse their seeds. When you see that the pods and stems are both brownish in color, AND you notice that the pods are starting to open you can then collect the pods. I place the pods on an open plate or in open bowls in a safe place where they won't be disturbed and let them continue to dry naturally for another week or two. Then I remove the seeds from them. To assure that the seeds are thoroughly dry I let them dry on an open plate for a few more days...I even will stir them every now and then to make sure the bottom layers will get a chance to dry too. Storing the dried seeds is easy. I use paper envelopes. I make my own with my printer, but you could use coin envelopes or even mailing envelopes will do fine too. Label them so you know what's inside. Store them where they'll be away from heat or direct sunlight. I use cardboard file boxes to keep my seeds in and those do just fine. Another good place to keep them is in your dining room drawers. Those are dark places and your dining room is sure to be safe from extreme fluctuations in temperature. Good luck with your seed saving! Trudi

It does appear to be overwatered.... Not sure if it can be saved... Honestly, it would cost less time to just buy a new one, but there are things you can do to try and save it. You will not be able to save the majority of the plant. Rather, you will need to cut off a portion and root it. That portion will have to have absolutely no rot on it, or it will not survive. Cut off a completely healthy segment, and dust it with cinnamon. let it sit for a few days in a cool and dry place. After that time is up, stick it in some dry soil, making sure you place it right side up. DO NOT WATER UNTIL YOU ARE SURE THERE ARE ROOTS. That is the most important thing to remember. when roots appear and leaf buds start to show, then you can water a bit.

What kind of water do you use? As its possible that there are high levels of contaminants in the water which can be bad for lucky bamboo and cause it to slowly decline over time.. However I have had my lucky bamboo lose a lower leaf or two due to not getting enough water as mine requires refilling every couple of days or it gets a little fussy.. Also you want tge roots to have room to grow and extend and keeping the stalks out of the humiditts inside of the jar is also a good idea.. You should fill the whole jar up to allow for more room for the roots to grow, and it would also allow for a bit of airflow to the roots. Hope this helps :)