Only tops drooping?

[Iamthejazz123]

My setup:
600 watt Roleadro Full Spectrum LED (not the blurple kind). 200 watt actual draw.
18/6 cycle, 15" from tops
6" exhaust fan and carbon filter. Passive intake creates a decent amount of leaf movement.

3 gallon fabric pots, Coco Loco Soil mix (NOT pure Coco, it's soil with Coco & Perlite).

Tap water, pH from faucet anywhere from 6.6 to 8.3 depending on the day. Checked with frequently calibrated pH pen.
Gen. Hydro pH Up or Down used after adding nutes to hit 6.5.
Been adding 1tsp Tiger Bloom, 1tsp Big Bloom, 1tsp Mendocino Cal-Mag every 4 or 5 days (when the pot feels light). Last feed was about .5 gallons. No foliar feeding.

Indoor grow, 36"x20" tent. Temps steady about 74, RH steady about 50%, no signs of any kind of bugs/pests.

Seedsman NL Auto, about a week into flower.

This plant has been drooping, but it's only the leaves toward the outer ends of branches and the top of the plant. The leaves closer to the main stalk don't ever seem to droop. The drooping sometimes goes away during the day, sometimes not.
If the whole plant drooped, I'd think underwatering, and to be honest, this plant doesn't seem to like getting as dry as my others. If I let it get as dry as my others, the sag gets REALLY bad. Is it possible it just likes to have wet feet?
The first 2 pics are the drooper, the third is the other plant in the same tent, which despite some earlier nitro tox, is fine now. I just wanted to include it so you can see another plant in the same conditions is thriving.

Whole plant:

Drooping leaves next to non-drooping on same branch:

The other plant in same tent:

 

[Jean-O]

Is it stretching out super fast ?

 

[Iamthejazz123]

I don't think so, it took it's sweet time to hit this size (it's an auto and vegged for 55 days!), it's about 2 feet tall right now. I would say the stems are thinner than it's sisters though.

 

[LazyNhazy]

I have one of my own strains doing this, I never see a problem anywhere but the dropping bothered me. So I saturated the soil then watered again an hour later and again. But I had a catch pan it was sitting in. Everytime it sucked the run off back up. Tops finally lifted after half day. Are you sure the medium is soaked for watering?

 

[Iamthejazz123]

Maybe it isn't, but the pot feels heavy like it's got water in it. Is it possible the roots are all in the top half of the pot and only feed from the top while water still sits in the bottom and is untouched because there are no roots down that far? It's only a 3 gallon, so it's not like it's a huge pot...

 

[karlkutta]

maybe too much water. the plant should reach whats at the bottom of the pot. my pots are HEAVY when watered and end up super light when they are dry and thats before my plants show any signs of dehydration. from your pictures it looks like the one thats a little slower to flower is the main one drooping. that dirt looks terribly dark and wet. how often do you water? i had a huge photo plant in a 3gal pot and needed to give her almost a gallon daily, but the soil would get dry and brittle, does yours get brittle and if so, how far down?
cheers and good luck.

 

[Proph]

Is the plant directly under the light? 15 inches isn't a lot of room between the tops and the light. Seems to be light sensitive. You can try raising the light a bit and seeing how it responds. Heat/Light stress in a dry environment can lead to "taco" leaves (upwards curling). Heat/Light stress in a humid environment can lead to drooping leaves. If the lower part of the plant was drooping, I'd think over/under watering. But because only the tops closest to the light seem to be affected, Im thinkikg more like light/heat stress. And as far as heat, Im not talking the overall tent temp.. Its mostly likely the direct heat from the light itself.

The roots will have definitely hit the bottom of the pot by now. And in a fabric pot, they are air pruning, so the odds of roots growing upward is slim. When you say that the pot feels heavy, is it top heavy or bottom heavy? That's how you tell where the water weight is. If you have good air flow, I'd lean more towards light stress than heat. Try raising the light for a few hours, or putting the drooping plant where the non drooping plant is (switch the placement around). See if that makes any difference.

 

[Arthur]

If your concerned about hydration, you might get some yucca to mix in. Maybe you've got a pocket that's become hydrophobic? You'll need something to reduce the surface tension to rewet.

 

[Iamthejazz123]

If your concerned about hydration, you might get some yucca to mix in. Maybe you've got a pocket that's become hydrophobic? You'll need something to reduce the surface tension to rewet.

I'm new to growing, I've never heard of hydrophobic pockets before, could you explain more?

 

[Arthur]

Sometimes when a soil has dried out, areas won't rehydrate, the water literally runs around these areas. If you reduce the surface tension of the water with something like yucca, it will get in there and moisten the soil. I haven't personally seen the issue except for some bag soil that had been sitting for a long time, but it's a big enough issue that there are many rehydration products from many of the nute lines.

I run it regularly in coco just to avoid an issue.

I'm new to growing, I've never heard of hydrophobic pockets before, could you explain more?