I’m fine with changing more water. I am also adding more plants once I get the funds. Specifically pothos.
Normal temperature in humid tropics like Singapore. My bichirs constantly live in those temperatures ??
Some of my tanks must have gotten to 84-86 in summer. Price you pay for keeping them by a window I suppose. I wound up dropping the heaters on them and they still sit around 74-78 depending on the day.