can i grow at 63 degrees?

My bedroom stays at 63 degrees all day can I grow northern
Lights at this temp , please all thoughts welcome

Do you have grow lights? if you do they'll warm your room a bit. ...or are you gonna attempt growing with natural light?

LED light, 300 watt mars, doesnt make much heat,

63 is fine as long as You aren't cracking seed's or taking cutting's.Existing plant's love 63F...

grow box is a wardrobe that is 3 foot x 2 foot x 6 feet tall, if I put a heater in the cab, the fan will just pull the heat out and put it back into the 63 degree room,, is it ok to turn the fan off for 50 minutes per hour and exchange the air once per hour in the box?,, that way the heat stays inside the wardrobe?

Yes but keep an eye on your rh and adjust accordingly....

at 63 degrees what should my RH be under?,, my thermometer has a built in humidity gauge, where I live the humidity can get high often, I was already looking at a De-humidifier for the room, ebay and amazon have them for around 39 dollars,

40- 70 are the highs and lows try and keep it in that park and you will b fine....

holy shit, I turned the bedroom heater to 60 degrees (which usually results int 63 degrees), I turned on the fan on low, and turned on the LED grow light, and closed up the box, come back 20 min later and the led makes enough heat that the temp inside the grow box was 70 degrees, I am kinda shocked, so I am guessing that 70 is pretty good?,,, also the humidity is 50 percent ,, i am guessing thats good also?

maybe I lucked out on this one

Perfect....

Your growth won't be optimum lower than bout 70 but will work just fine