Hi guys, I've finally joined these forums after lurking around unregistered for a long time. Hopefully I have some valuable insight to share somewhere along the way.
Anyway... I've just returned to my cacti after a year away. A friend has been looking after them for me and two seem to have become very sickly... I haven't had anything like this happen to my cacti before and apart from the obvious sunburn and etoliation I'm a bit unsure as to what's going on and the best route of action to take.
Hoping you guys can shed some light for me.