...bring'n your plants indoors from the outside gives you a very high chance of insects infesting your garden. Hermie is usually a bad environment issure caused by several things....but, giving different light wasn't one of the factors. Temps, and inconsistant lighting patterns are more likely to induce hermies.
...furthermore, the most important thing to bloom your plants you want to focus on, is to give them 12 hours of uninterrupted darkness....some argue 8-12 hours of darkness...but, 12 is safe.