couple quick questions

Hi! During vegetative growth it does not matter if you have light leaks 'cos the plant can grow even 24hrs lights on but during flowering you want to eliminate EVERY light source in the tent 'cos basically everything that is brighter than the moon (Except green light 'cos it does not matter at all in right spectrum) might prevent your PHOTOPERIOD plants from flowering or make them hermies. Now that you have autoflowerin strain it should not be that important to prevent light lekas 'cos autos will flower no matter the lights but just to be sure i would still eliminate all the light leaks etc during the dark cycle. If it is easy for you to install and uninstall the carbon filter I suggest that you start using it only when you need it 'cos with this you give that carbon much more lifetime. And why use something that is totally unnecessary? Exhaust fan is good to keep on to circulate the air and keep fresh air in the tent but it should not be a problem if you shut it off for an hour or so if the temps in the tent wont get too high!