Hello. I have a rubber plant that is exhibiting signs of disease. I first noticed the problem this past summer. The leaves of the plant will start to get a small split (photo 1) that will progress to affect the whole leaf (photo 2 & 3). Many new leaves, but not all, seem thinner and some are misshapen. The plant is outside in the summer/early fall and inside during the remainder of the year. I have owned the plant for approximately 12 years and it was not a young plant when I got it. I fear that my plant might be afflicted with foliar nematodes. This is the only plant that I own and I am willing to go to great lengths to save it. There is a product called ZeroTol 2.0 that I am considering trying. The basic chemistry is Hydrogen Peroxide and Peracetic acid, plus surfactants, buffers, etc. My questions are: 1. What do you think is affecting my plant? 2. Is ZeroTol safe to use on a rubber plant? 3. Do you have any other suggestions for things I can do to save the plant> Thank you so much for your time!