I'm not sure whether to water the tomato or if I'm watering it too much. The leaves are all droopy and it is looking listless. The outside temperature is 25°C and humidity is through the roof. Tomatoes like warm, dry temperatures, so this humidity may be pretty uncomfortable for it.
But the problem I'm most worried about is a white powder on the leaves. It looks like a fungus, but I can't find anything relevant online about it.
If anyone has any idea what the problem is and what the solution should be, please leave a comment.