My humidity is going up, not good!!!!! Please help! Thanks ;)

I have great airflow rn, but today my humidity just started going up, and it is concerning me. Its usually around (45-4 percent, and now its at 52 percent and climbing. I have my window open rn, and my temp is at 77 F I have one small fan in the tent itself, and a ceiling fan close by going etc. My plants are in a grow tent http://www.htgsupply.com/Product-HTG-250w--Small-Grow-Tent-Kit.asp Should I invest in a small dehumidifier? Put my window down? I am on day 11 with my plants, they are Purple Kush Auto. I am using 250hps for my two plants I have not watered in 4 days. I am going to water, and feed them today. Any help would be greatly appreciated Thanks!!!!!!!

it could hit 65 and you'd be gravy for veggatative plants. My humidity for veg is 58-62 day, 48-52 night. Only reason it drops at night is because i use a window unit ac to get the temp down. If it continue to rise past 65 i would just simply run your ac. Everyone can say get a dehumidifier but dont dump $200+ if your ac gets your relative humidity to a good spot. Be sure when flower comes around your rh STAYS below 55. At an rh of 55% or higher fungis and mold can begin to form, which can cause bud rot. Not sure how your growing though, if its a grow tent make sure you have good ventilation to bring in a sufficient amount of air from the outer room that the ac is running in. If its a closet grow, its as simple as opening the closet. Or if your grow is powered and takes up a room, flip the ac on lol. Good luck

dehumidifiers are nice to have. they pull the moisture out of the air, raising the temps at the same time, reducing mold problems. although i don't think your rh is high at all. there's a range of temps and moisture levels that cannabis grows well in and you're in that range.
and i also wanted to discourage you from feeding your seedlings for about a month. they just don't need it yet. if you must then cut the rate so you don't get claw or burn anything.

Jus go online to target.com and buy the smallest one they have its like 45 bux 50 max. They only sell it online. Its the size of a 3 gallon grow bag. Its worth it. During flowering u want humidity low and autos flower fast. Powdery mildew sux and u def dint want mold or bud rot. Peace

Dr. Bones

a dehumidifier can help, when are you watering?

get a biger size exaust fan. im having a problem becuz my fan is to big. 720 cfm for a 10 X 15 foot area. fucking humidty stays around 27 %. way fucking low. i got auto and non autos running same room.