Mocchaccino
Biomedical Scientist
I noticed a few rusting spots near the tips of the older leaves when i purchased it, if not mistakenly about half a year ago. Later I found this problem becoming more serious. The new leaves were getting involved with the rusting problem while the older leaves were almost wholly 'covered' by these rusting spots.
Another slipper, previously being healthy, seemed to be infected as well. I looked up some books and what i could come up was the red mite problem.
Any ideas?