first timer grower, have i stuffed up?

I have a setup with 4 plants. They are my first batch and are sort of a test batch. They are all clones so they are definitly female. They are under hot/cold lights plus i have an HPS. They seemed to be doing really well, looking healthy, soacking up the water and nutrients etc...Cut a long story short some stuff went down and they were in darkness for 1 day! Now they are flowering, they are about 1 foot high so not big enough in my opinion. Is there a way i can reverse this so they will keep growing (go on 18h a day cycle) or do i need to keep them flowering (12h a day) if someone could give me some advice it would be greatly apprciated as its alot of time and money wasted if there screwed. thanks in advance.

Switching from the flowering stage back to the veg stage is possible. And it is exactly how it seems, just change the light schedule back and take care of it. There are alot of post about that.

uuuh sweet thanks for that, i wasn't sure if it was just as easy as going back to the other schedule. thanks again mate.