I have had my aluminum since May of this year and keep it in a clay potted plant with drainage. I had the plant sitting on a table near a window, but my window doesn't face the sun so it does not get direct sunlight. For the past two-three months, the tips of all the leaves have turned brown, about 1/4 of the leaf. There is a very defined line where the green ends and the brown begins. Is this from lack of sunlight? Or watering? I've repotted the plant, which didn't seem to make a change. There are also short brown stalks in the pot, but they haven't grown anything.
Is My Aluminum Plant Dying?
Certified GKH Gardening Expert
Here is a link to review the growing conditions.
This could be a few things, including the issues you mention.
Repotting in to large of a container can lead to soggy roots and root rot. The browning tips can be the first sign of that. Water only when the top inch or so of soil is dry.
Aluminum plants are actually a tropical plant, hot or cold drafts can cause browning of leaves.
Over fertilizing also can cause the issue.
Lastly if you are watering with conditioned water, over time the salts can build up in the soil and cause the leaves to began darkened and kill the plants. The salts build up in the soil.
You can set the water out on the counter 24 hours before using to water your plants.