Phalaenopsis Stalks

[Melis]

Hi There,

I am fairly new to Orchids and got my first about a year ago which I bought from a Super Market. From what I could gather from the Internet it is a good idea to keep them Outside if possible in the warmer months after flowering so they can fell the temperature change to prompt making new Flower Stalks. So this is what I did.

All of them have started to make Stalks now but I am unsure when to bring them back inside. My Grandmother once told me that if you bring them in too soon then they never actually flower but unfortunately she is no longer with us so I can ask here when "too soon" is. I'm hoping someone here could give me some Guidance. I live in Pretoria, South Africa so we are busy going into Winter now.