60f, 3 weeks in flower, are temps to low?

i got my girls in 3 weeks flower now under a 600w hps. the temps are at 60f at lights on, is that to low?

I have grown with 65 lights on and 55 lights off not the best conditions but it still works

it will slow the plants growth a bit by 2-3 weeks--keep them girls warm --not hot==-not cool

try and get 69 at least brotha. i do 69-71 day and 66-69 night. works great for my bubble gum bubbas.

yea its fine. just make sure the roots stay warm. you dont want to freeze the bacteria in your medium. your gonna have some pretty colors pop out too.