55° in flower room last night. Problems?

HI all,
First time growing in this location. Using a bedroom closet. The closet has been getting as hot as 86, so every other night or so I open the window all night. Put a box fan in window last night. This am right after lights come on, air temp is at 55 dwc rez temp is at 54. Rez will always fluctuate with air temp, but rises quickly since a light is near it.

I haven't noticed any issues with the plant yet (W10 flower, super stretch 4' sativa), and I do use silica to raise ph. Just wondering if there is anything I should do or look for.

I grow in dirt but watch my soil temps in the mornings to make sure they get over 65-70F by night time/dark period. Cold temps at the root zone will slow growth but it sounds as if they get warmed up by your lights. I get into the 50's at night and haven't had any issues but my humidity is really low @ 20%.

I have a big dehumidifier I usually run at night (trips breaker when lights on), it puts out a good deal of heat, but keeps temp in 60s and humidity in 30s in the closet. Today was 55°/45%, so I think I'm gonna always run the dehumid at night.

On the other hand, it is going to be tricky keeping temps down next week when out of town since I can't open any windows.

i had a harvest..some~40 master kush crosses. hit 100° for most of flower..and still turned out beautiful.

crops get rotated under a 24hr light..or the light moves. ive had plants hit 40s during that time and then get quite hot under light.
(dont judge... i didnt feel like putting effort in that grow)

i know you said dwc or whatever..but ive had seedlings and full flower get a few inches of snow outdoors. and consistently freeze at night to hit 30's maybe 40's during the day





im not saying its ideal, but cannabis is quite hardy... i wouldnt worry

Might night temps are 55 deg and i have no I'll effects

I'm dwc and have been dealing with 50 degree nights. It causes dew on the leaves. I think it mimics nature. My water temps going to 57 degrees.

I have not seen any slowed growth or anything. But that's my situation and might not be true in your grow op.

Lights on right now with 600w 12" away from tops and it 68 degrees and 47rh.

your fine, you can almost freeze the plants and still be ok. Few things to watch out for though, slowed growth at lower temperatures, and potential powdery mildew from large day/night temp differences.