First Grow Problem

[Moose8810]

Problem:

Leaves curling/taco on 1 of 6 plants, others seem perfectly happy to my untrained eye.

Medium/grow method:

Botanicare coco, 70/30 with perlite, fabric 5 gallon pots

Feed: and supplements used:

GH trio plus 2ml/gal Cal-Mag plus, feeding chart attached. Feeding them to runoff every day, by hand, near lights on. I've also used Optic Foliar and Recharge a few times each.

water source:

Well water, ~140ppm 6.9-7.1pH out of the tap

Strain/age:

Tangerine Dream Auto from Grower's Choice Seeds, Day 27 from sprout.

light used:

630W CMH (one 3100K Bulb, one 4200K bulb), 2x 2700K Autocobs from cobshop. 18/6 schedule, around 30" from canopy

Climate:

5x5 tent. Lights on; leaf surface temp 70-74F (78-82F ambient) 50-60% RH. Lights off; leaf surface temp 66-70 (~72F ambient), 60-70% RH (I just picked up a dehumidifier).

Additional info:

Growing 3 Gorilla Glue and 3 Tangerine Dream autos. The other 5 seem to be happy and growing steadily.

The plant in question has seemed stunted since it sprouted, and lagged behind the others quite a bit. The leaf curling began approximately 4 days ago. I started LST on the other 5 plants 8 days ago, but I've left this one alone where it's seemed so stunted. I don't have any real expectations for it, but is there anything I can do to try and help it along a bit? Other than not training it at all, I'm not doing anything differently to it from the others, any input is greatly appreciated!

The three on the left are Gorilla Glue, right side is Tangerine dream. The other single-plant photo is the Tangerine Dream directly next to (and under more direct light) the one with issues.

Any other issues visible in the other plants? Anything I'm going about the wrong way or things I should do differently?

 

[Mañ'O'Green]

Problem:

Leaves curling/taco on 1 of 6 plants, others seem perfectly happy to my untrained eye.

Medium/grow method:

Botanicare coco, 70/30 with perlite, fabric 5 gallon pots

Feed: and supplements used:

GH trio plus 2ml/gal Cal-Mag plus, feeding chart attached. Feeding them to runoff every day, by hand, near lights on. I've also used Optic Foliar and Recharge a few times each.

water source:

Well water, ~140ppm 6.9-7.1pH out of the tap

Strain/age:

Tangerine Dream Auto from Grower's Choice Seeds, Day 27 from sprout.

light used:

630W CMH (one 3100K Bulb, one 4200K bulb), 2x 2700K Autocobs from cobshop. 18/6 schedule, around 30" from canopy

Climate:

5x5 tent. Lights on; leaf surface temp 70-74F (78-82F ambient) 50-60% RH. Lights off; leaf surface temp 66-70 (~72F ambient), 60-70% RH (I just picked up a dehumidifier).

Additional info:

Growing 3 Gorilla Glue and 3 Tangerine Dream autos. The other 5 seem to be happy and growing steadily.

The plant in question has seemed stunted since it sprouted, and lagged behind the others quite a bit. The leaf curling began approximately 4 days ago. I started LST on the other 5 plants 8 days ago, but I've left this one alone where it's seemed so stunted. I don't have any real expectations for it, but is there anything I can do to try and help it along a bit? Other than not training it at all, I'm not doing anything differently to it from the others, any input is greatly appreciated!

The three on the left are Gorilla Glue, right side is Tangerine dream. The other single-plant photo is the Tangerine Dream directly next to (and under more direct light) the one with issues.

Any other issues visible in the other plants? Anything I'm going about the wrong way or things I should do differently?

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@Moose8810 Welcome to AFN. To get someone’s attention put the at-mark @ in front of their AFN name like I did for you.

Here is a rep slap for filling out the form on your very first post!


Your grow looks good to me.

Tacoing is usually heat and wind related in conjunction with the Relative humidity. First off your plant is not taco mucho just minor. The comments on the slow start means it could be genetic since your other plants are all vigorous. RH <40% and >60% will have the plant closing the stomata and curl the leaves to conserve water. You mention time above 60% RH, redirect any fans blowing right on it. Once again I want to come back to genetics because I have to deal with high temps and RH in the summer. I find the Sativa dominant strains grow better in those conditions. Maybe nothing will help this plant it is its destiny and maybe this one will be the holy grail of grass?

A couple of ideas that might help:
Correct RH% (there are so many times when I cannot do this.)
A surfactant added to watering. It helps the water/nutrients disperse better. Yucca powder is what I use.
A foliar feed of fulvic acid B1, yucca powder, and kelp extract. (fulvic acid 5 parts / kelp 2 parts).
or Earth Juice Microblast. Never more often than weekly.

Really what your doing already looks good to me!

 

[Moose8810]

@Mañ'O'Green Thanks for your input! When you say redirect any fans blowing on it, do you mean make sure there's good circulation or take the fans away from it? I've got a 16" oscillating fan in the corner blowing back and forth across the top of the canopy (just enough to give each plant a light flutter) constantly. I've moved the small clip fans up to the ceiling to circulate around the lights, and I have an additional fan to help with intake.

As far as the humidity, I had a dehumidifier delivered yesterday - today's lights out will be the first full "night" I've run it, so we'll see if I can manage to keep the humidity down during the cooler period.

I'll definitely look into yucca powder, thanks for the tip! Is there such a thing as too much fulvic or kelp? They're both in the Recharge I've been hand feeding them, but I'm not sure that it's in the Optic Foliar.

Thank you again! Glad to know I'm at least somewhat on the right track, honestly surprised everything's gone this well for this long being my first go at it. The other girls just want to take off, they've taken the training really well