Room Temps? too cold?

Hi can any one tell me what would happen if my grow room is too cold please?? i only have 1 of 3 lights on for the min once they are all on i would expect it to heat up a bit. At the min the temps are around 50-60degree f.

As a learning thing i would hazzard a guess at sayin i would stunt the growth of the plants if it gets too cold????

The temp in my current grow room with lights off gets down to 55 and with lights on the temp is 78 . I havent had any problems yet.

why dont you always use all 3? the more light the better.50-60 aint that bad, it can survive in fall and thats where the temps usually are at night if not lower around here.

just my seeds waiting to break the surface in jiffy pellets in propergator under 1 light at the min so one should do i think for week, or do you reckon all 3 still should be on? thanks for advice on temps though!

when they break the surface go to all 3 on, otherwise they will stretch really bad toward the light that is on

If temps are low then run all 3 lights and see where your temps at.

ok thanks guys