Need advice for temps PLZ

My girls are week 3 into flower throughout 12/12 I’ve kept 68*F is that too cold? If so have I mess up my yield and should I raise temps. Any advice helps thanks in advance

No that's not too cold. The leaf design is for cold temps. I've had some outdoor grows dip to 45f and they did fine. More temp = More growth though.

they will survive but like anything, optimal conditions give optimal harvest. I would try and raise them temps a little, maybe 75 to 80 lights on under LED.