My First Grow..Sort of! Big Bazooka

Hello everyone, hope youre all doing well. This week was a bit of a challenge in a couple ways. Ive started dropping my base nutes, started adding a PK booster later in the week as I dropped the base nutes. My top fan leaves in the centre still look a little crispy but at this point Im not sure I can do anything about it, and overall my buds look very nice to me. They are swelling and putting on weight and the trichomes look good. The challenges were related to the fact that the weather is taking a turn for the cold, as low as -18C at night and -12 during the day. Growing in a heated shed, this poses... not a problem pe se, but a challenge as Ive had to really keep an eye on my temps, adjust the thermostat settings on my extractor fan, adjust my HRV speed, adjust the damper controlling how much air goes outside vs into the roof of the shed to heat it, all on an almost daily basis. Now, after a few days of temps below -10C. the air is getting dryer and Im having to adjust my dehumidifier as well. Keeping to my target temp has been fairly easy, but matching that with my target RH has been a struggle. Just the other night it was getting as low as 36 and 37%HR and I had to turn off the dehu almost completely for a while to get it back above 45%. Im now hovering between 45 and 50% and expect it to get easier. So long as the temps stay low and the outdoor RH stays low I can turn off my dehu and just vent when it gets too high in the grow room, but Im definitely considering a humidifier for future grows so that I can both add and remove RH as needed. That and a closed system might be worth looking into. Heading into the home stretch now though. Cant wait for harvest 😁🙏🙏!!!