Flowers collapsed/shriveled after foliar feed

My grow was going fairly well, into my second week of flower growth was looking good; Until-

Watered Thursday, no feed and noticed the leaves started to fade. Also realized during the stretch it was too close to the light (13"). Raised light back to 18"
I had the environment at 77F RH about 50%, then I started reading the cal/mag LED thread and started chasing VPD. Raised the temp a couple of degrees along with humidity. Leaf temps were too low for the humidity level, 71F and the soil was dryer than normal in two days instead of three. Performed flush (not because of issues, it was scheduled for a flush) on Sunday- the third day, and fed. Since it was looking so down I applied a foliar feed which I normally don't do. I later read that foliar feeding should be done after lights out, mine was about an hour after lights on- also I misted too much.

The following morning the leaves had perked back up, they were droopy from being thirsty- but were still off-color and the flowers were shriveled. Nothing has really recovered. Already dropped the temp back down to 77F where she was happy before. RH 50-55%.

Anything I should do or just wait it out?

Tent: 2X2.5"
Soil: FoxFarms Oceans Forest 10gal fabric pot
Lighting: HLG V288v2 X2, running at 148W 18" which is about 400umoles at canopy
Nutrients: FoxFarms trio- currently at 7.5ml Big Bloom, 5ml Grow Big, 5ml Tiger Bloom per gal
additional supplements: 1.5ml SI, 10ml Sledgehammer, 5ml CalMag usually the mix is 650ppm
I also give CO2 in the first few hours with dry ice. I don't know how much this helps, but the dry ice is free.
I usually water/feed 3gal every three days (yes it's needing water on the third day) and get about 3/4gal runoff.
pH 6.5-6.8


While you're here, how the nutrient dosage look? Too light?
I seem to get better results when I feed every water instead of every other... that makes me think too light.
The last time I started chasing VPD I got myself into trouble as well.

First .... don’t Foliar anything on flowering buds.

You shouldn't foliar with lights on, as you seem to be aware of now.

Your plants will be fine. They look like they probably were fine. Careful not to overfuss.

But they will be okay. Prob hurt the yield maybe 15%.

Second ..... this a Sativa leaner ..... buds will be compact . They look good .

Third .... you should getting ready for the bloom nute after the 2 week of flower.
Forget the dry ice thing ... ( you don’t need to add humidity ) flowering likes 40% Rh.
Plus if you are not pushing at 700 u/mol or higher, you won’t get much from CO2.
And if CO2 is not falling from above canopy , then it does nothing. CO2 is heavier than air.

In a space that small, you generate enough CO2 by merely breathing.

Would dry ice raise RH? isn't it dry?

Dry ice is the name for carbon dioxide in its solid state. At room temperature, it will go from a solid to a gas directly. While carbon dioxide gas is invisible, the very cold gas causes water vapor in the air to condense into water droplets, thus creating fog

huh trippy

Definitely wouldn’t feed every watering since you’re in soil. Those plants look good though just don’t foliar in flowering stage as others have said. You’re doing too much at times it seems like, no disrespect by any means, you love your plants. Your temp and humidity are perfectly fine. Keep that light around 18-20” away.

pthobson said:

no disrespect by any means,

Click to expand...

No disrespect taken.

Thanks to everyone here for your help, I appreciate it.