Thanks all,
my growing habits: east window, humidity 60-70%, water every 6-7 days (winter 10-14), fertilize every other watering, nevr use cemicals for pests and diseases (becouse in my country I cant found kocide, physan...or something else) I use only cinnamon fungicide and bactericide) and magnifier and react on time. this is it, and ofcourse I give them love