[frogslayer]

I run that humidity in my tent every night man. How cold is it that 65 rh is low vpd?

[serenity-stoner]

Turns out I left my tent open that night every thing was fine my wife walked in right while I was watering and was freaking out about something at work it pulled my attention away then I forgot to go back and close it all up smh live and learn

[wrath420]

You will be fine with that humidity! Where I live it gets very humid during summer and my summer grow humidity gets pretty high in the upper 60s and low 70s and I have managed to grow without powdery mildew molds or bud rot!

[jmystro]

Genetics. Plenty of genetics will rot at 70% RH. Some won’t. Never make a blanket statement about cannabis.

[hannabis]

You should be fine, you do have fans circulating the air right?

[serenity-stoner]

Yeah I have a fan going consistently in there I forgot to close my tent door. Straight amateur move lol wife came in from work pissed off and it pulled my focus away from the grow and I never went back to check the door but live love and learn

[jmystro]

65% is high enough for mold and mildew to form but it’s mainly a concern with large dense flowers. Huge colas can have a micro-climate inside. You really want to stay under 60% RH with good air flow in flower to ensure nothing takes hold.

[wrath420]

I do increase my airflow fan speed when my humidity goes up!

[serenity-stoner]

Unfortunately I can’t do that cuz my fan is already maxed lol I would’ve definitely went that route though

[guppygirl]

Yikes on bikes! It sounds like I have a very short period of time to get humidity under control in the room. I think the lowest my humidity has been has been in the 71% range and was pushing 86 at a high at one point. Since I’m now entering flower, I’m going to have to set up the big new dehumidifier I ordered, and try and get that humidity percentage down to something a little more reasonable, say what 60%?

[bepennjier]

I just had bud rod in my tent. but only on 2 buds which admittedly were in a calm part of my tent. they just didn’t get enough airflow. I’ll get another fan in asap (the 3rd one, currently 1 below and 1 above the canopy). I have about 50% rH (+/-10 depending on weather outside) in my tent, certainly higher at night. And I’ll inspect every remaining bud everyday for the last 2 weeks.

What I learned from that: airflow airflow airflow

as long as it’s not raining inside your tent airflow is your best tool

(T-shirt idea: “keep calm and you tent windy” ..nah sounds wrong)

I’d be more worried about light getting in the tent when it stays open at night.

but that’s just my opinion

you’ll be fine

[shortlife]

Remember that humidity is relative. I would suggest using a dew point calculator to work out what temperature you need to hold with that humidity to be safe from developing mould.