Some of my phals I wouldn't water even once every five days in my very arid climate, and they STILL rotted! I tried sphagnum moss, peat and perlite, etc., and they always ended up rotting eventually. Maybe I should have kept them more dry than I did, after reading your post. I never gave them direct sun either. I love the mini phals that bloom so often with those 1 inch or so blooms.