Phaleanopsis (Moth Orchid)

flowering again, started at the end of December that makes 3 times in 2014. The Purple one is also out in flower and the cream one in bud. They do really well on my kitchen window sill directly above a radiator they get plenty of light. I water them from the bottom twice a week and feed weekly when in flower and monthly when not. The purple one is about 7 years old the cream 6 and this one around 5. This white one is smaller than the other two.