I need some help with my begonia maculatas. I have three of them, I keep them in a mix of soil, sphagnum moss, orchid bark, and perlite. I run a humidifier consistently and they are in a minimum of 60% humidity at all times, sometimes closer to 75% humidity. The bottoms of their leaves seem to be being “eaten up” by browning edges. It happens so quickly and they get so dry as a result. I’m not letting the soil become water bogged but I’m also not allowing it to dry out completely. Could it be too much light? It did just push out a new beautiful leaf for me and I don’t want it to meet the same fate.