30 hours to 18 hours problems?

I have about 15 or so plants that I have had going for different lengths of time but the majority is almost 90 days; will I have a problem if I put a timer on it to go back to 18/6?

Does anybody know about this?

you have 15 plants.
they most of them for 90 days.
will you have a problem if you change your timer setting?

depends on whats the timer settings were before.



smart, aye?