Actually, I was considering a separate space for just such a way to deal with this. The only reason I delay is it requires another power supply. That way I can veg at 13 hours and once adjusted, can then very slowly alter the timer to control the light change....and yes I feel it would be worth it to do so. But, that is another 400 W setup and finances are very tight, I am in the beginning of a mess of expensive dental reconstruction.