if it fell in a chlorinated pool- that is a swimming pool -- the chlorine damaged both the foliage (directly) and the roots.

Stop trying to overcompensate for the excess water by allowing the mix to become dry.

Time will tell if recovery occurs.

I agree the damage is almost certainly from pool chemicals. If you haven't flushed the soil VERY thoroughly, please do. Make sure that a volume of room temp water equal to at least 10x the volume of the pot the plant is in makes its way slowly through the soil. If you're worried that represents over-watering, you need to take a critical look at your soil choice, but that's another conversation. If you're using a cache pot or a saucer under the plant, make certain the bottom of the pot is lifted well above any water that collects in the saucer/cache pot so there is no pathway for the effluent to make its way back into the soil after it exits the drain. Then, as Jean mentioned, it becomes a wait and see kind of deal.

Withhold fertilizer unless/until you see new growth. Water when the soil is almost but not quite dry near the pot's bottom. Use a wooden skewer or, preferably, a 1/4 or 5/16" dowel rod sharpened in a pencil sharpener. Push it to the bottom of the pot and water only when the tip shoes nearly dry when you remove it.

The background info provided forces us to believe it's from the unscheduled swim it took, but I still must ask if you have an ion exchange water softening system - one that requires the addition of salt from time to time? On the chance the answer is 'yes', priority one is figuring out a work-around for that.

Al

Thank you so much for the responses! I did flush out the plants soil multiple times as soon as we pulled it out from the pool, and I do agree that there must have been some damage done as it's a saltwater system. However, I think there must be something else going on as both plants are exhibiting the same symptoms (and only one poor plant fell in the water). It does seem to be spreading from leaf to leaf, I removed affected leaves and tested a few leaves with an organic fungicide. We don't have a water softening system, but we do have a whole house water filter. To give you an idea of the loss, the entire bottom bare stalk was covered in beautiful leaves just a short two weeks ago (there was no trunk showing).

I have very serious doubts that the issue is fungal, or bacterial. It looks like symptoms of stress caused by something cultural to me. Have you applied anything to the foliage - insecticides, leaf shine? Cleaned the leaves with a household cleaner? How long since you fertilized? If recent, please describe what you used. Are there any fertilizer stakes in play here? Any chance a cat is doing its business in the pots? Have you done anything in the home that created potentially phytotoxic fumes - refinished floors, painted/stained with oil-based paint/stain, discovered a gas leak, .....? Used a propane or kerosene heater?

Al

Appreciate the in-depth questions! Nothing applied to leaves, and haven't fertilized since summer. The cat might have gotten into them, but I haven't seen that. We currently have aluminum foil (yes we look like crazy people) over the soil since she has done it in the past so it is possible she got to them when they were first brought inside, but usually she kicks around the dirt and it is evident which I do not see. No renovations or new painting, and the heat we have is hot water radiant heat (baseboards), which are not near the plants. The brown and dropping leaves is working its way up the plant, from bottom to top. It seems to especially occur where the leaves are touching one another, which lead me to think fungal.