Cacti we've lost

[ohugal]

All mineral soil. Only watered it on sunny days. Humidity was very high this summer (70-80%). Temperature was around 24 degrees celcius. Went on vacation for 2 weeks and probably didn’t leave the window open wide enough. During the week I have a fan running on a timer with the windows open or a dehumidifier with the windows closed. I don’t trust the fan enough to have running for 2 weeks without supervision. Also had an echinocereus russanthus which developed some type of mould. Never had issues like this before. Summer was expectionally wet this year. A lot of my tropicals also had mould on the top soil.