u/Sofisylveon

I have this ficus and separated from the mother plant a year ago. It has being growing in a north window. I have noticed that one leaf didn't develop correctly and gor this spots. I first thought it was mites but after rubbing they don't come out. Is this a type of fungus? Or just sun burn? Any tips?

Hello, here is my begonia rex flamenco. It's growing really well with the pot that it has. I'm afraid to transfer her to a new pot and see a decrease of leafs size. It's around 10 months since I have her. She is in a west window with direct sunlight and a self watering pot. Would it reduce the leaf size if transfer to a bigger pot? The biggest leaf is tbe size of my head. Here are some pictures.