humidity?

ok, as i improv things in my tent, other things seem to go haywire. Since i made a couple changes, my humidity has risen. It is about 55% with lights on and 67% with lights off. Is this ok, or should i get it back down to around 40-50%? Thanks in advance

Unless you have a really good ventilation setup(air blowing across plants), beware, that RH is very inviting to bud mold.