i do outdoor by day and shuffle couple dozen 10 gallon pots in for LED by night.veg.....and .i have a grow tent to flower at night full on w 3 450 LED's , exhaust fan, carbon filter and dehumidifier that is vented out of tent......w all kine circulating fans inside going on............the inside tent temp is 81-84.........right now in the night of winter............humidity outside is 81-84 RH.....same as my tent temp..........my dehumidifier brings RH down to 45-55..............im always battling PM in veg plants...............I find it amazing that your RH outside is only 60...........you must live in the dry area like waianae........................my climate is like the amazon rain forest...........
I actually live central, were its all moldy and shit lol. Our average outdoor humidity is 65-70 during a clear sunny day 75-80 overcast/drizzling 90-100% raining. I clean my indoor area once a week to help prevent contaminations, i also use short cabs to veg and flower indoor, which forces me to tie my branches down, this opens up the middle of the plant which drops humidity and allows the inside and outside a breeze with the oscillating fans. The last time i had pm, i threw all my ladies in the trash only to end up with pm the next time around in veg! Just gotta keep the room clean and once you get PM, you need to clean the hell out of the walls, fans, pots ect. Trash the soil, start over because that shit will spread. If you plant outdoors, and night time temps is within 65-75 try to plant in an area with good airflow.