Musty smell from grow

[xrdamianxr]

So for the last 3 days I've been getting a fairly musty smell in the grow closet. Really no particular smells up until then. I've had 2 successful harvest in this closet thus far And not experienced this smell. Everything is the same except for bigger light and I started auto feeding around 2 weeks ago. Previous grows i watered by hand once a day.. also had smaller plants
Growing in coco. Feed to 10%ish run off twice during lights on.
Temps 64/81F 29-48%rh. (These are max lows and highs)
Oscillating fan at canopy.
2 clip fans under canopy.
1 clip fan at LED light
Exhaust+filter and active intake
I've tried sticking my nose in certain spots. Plants smell like plants. Coco smells like... dirt? (Guess I never tried to smell it before lol) closet smells old and musty. Any thoughts fellow people? Hope I didn't forget anything
Plants are 22 days into 12/12

 

[Skuxx]

I'm guessing it's just the weed because they look fine and the environment is ok. They can get that smell in flower, especially good weed.

 

[xrdamianxr]

I'm guessing it's just the weed because they look fine and the environment is ok. They can get that smell in flower, especially good weed.

I was hoping to lean that way. Other then I grew this strain just last run. Tho it was only 1 plant of this stain and not even 1/3 the size 1 of these. so maybe that's why I didn't get a noticeable smell

 

[Skuxx]

I was hoping to lean that way. Other then I grew this strain just last run. Tho it was only 1 plant of this stain and not even 1/3 the size 1 of these. so maybe that's why I didn't get a noticeable smell

Were they all from seeds? Could be different phenos. Always keep an eye out for mold but I am thinking it's just the weed. Your environment is on point. I did the same thing my first few grows thinking the musty smell was something bad, but towards the end of flower the terpenes develop more. Cheers and hope you have a good harvest.

 

[madvillian420]

do you keep the door closed for lights off? Is that panda film on the walls? moisture can get trapped behind it.

 

[xrdamianxr]

Were they all from seeds? Could be different phenos. Always keep an eye out for mold but I am thinking it's just the weed. Your environment is on point.

From clone. And thanks for your replies!

do you keep the door closed for lights off? Is that panda film on the walls? moisture can get trapped behind it.

Yes. Door closed 24/7. Yes. panda fim everywhere. And come to think of it. That was another thing I did differently this run. Added sheet of panda to cover the floor. I'll have to look into this

 

[xrdamianxr]

Wanted to revisit this... open the door to take a wif bout 5 hours into lights out.. not much smell. Again right at lights on (7 hours later) had to take a minute to find any smell so almost non existent.
30 minutes later after 1st watering. Instantly smells musty. Very Strong smell.
Will be pulling plants out in a couple hrs to clean, inspect and reevaluate