Leaves Curling under / rolling

Hi All,
I have some rolling of the leaves Any thoughts? (attached pictures as well as survey)


What is your experience level? Novice

Your Equipment:
.1) Type and wattage of lights? 400watt HPS
.2) Distance from tops? 16 to 18 inch
.3) Reflector type? bat wing
.4) Is there a consistent fresh air supply? Yes, in an open closet space
.5) Do you have an exhaust fan and a circulation fan? Yes, two box fans, one blowing into closet and one for exhast on the other side
.6) What are the bulb wattages, kelvin ratings, and schedule? 400w HPS 12 / 12

Your medium:
.7) Specific brand and type of soil? Organic Generic (vermiculite, perlite)
.8) Size of container? 2 Gallon (donâ??t have room to go bigger )
.9) Did you use peat pucks (or similar) to root clones or germinate seedlings? N/A

Your nutrients and water:
10) Source of water? (tap, bottled or filtered) What's it's ph before adjusting? Bottled 90% of the time 10% of the time Tap water, Tap water PH is ~9 and the Bottled is ~ 7.5
11) Method of checking water ph. ? Hanna pHep pen
12) Method of adjusting water ph? pHUp / pHdown
13) Specific brand and N-P-K ratio for each bottle? Fox Farms
14) How often are you watering between feedings, and how much per watering? About a qt. of water when soil is dry and pot weight drops ususally 2 waters between feedings
15) Any additives or tea's? No
16) Are your ph levels stable, or do they fluctuate? Stable
17) What is your ingoing water's ph? ...your runoff ph? 6.5
18) Do you foliar feed? If so, with what, how often, and at what time do you spray? NO

Your growroom:
19) Indoors or outdoors? Indoor
20) What size of closet, room or hut? 2x8x8
21) What are the temps and humidity levels while lights are on? 77 ...With lights off? 70
22) Have you seen signs of insects in the growroom? No

Your strain:
23) What strain are you growing? ICE / Bubble Gum/ Pure Afghan
24) From seeds or clones? Seeds
25) Is this an autoflower strain? No

Thanks again for reading!

PH .... get a digital read, stay between 5.8 - 6.5 and they will recover partially. Good luck

Thanks Caveman, But i have been keeping my PH in range, 6.5 in using my Hanna PHMeter....

How is your feeding? How much amount of nutrients you're giving?

By the way its really normal to see people around here crazy about pH when there is 5 question about pH but not even one about feeding...

Thank you for the response...

I follow the fox farms feeding schedule, I am suppose to feed week 5 of flower tomorrow (every wed I feed)
I mix to their ratios and I mix up about a gallon and a half of it to feel all 5 plants once a week

Quote:

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Originally Posted by batlin

Thank you for the response...

I follow the fox farms feeding schedule, I am suppose to feed week 5 of flower tomorrow (every wed I feed)
I mix to their ratios and I mix up about a gallon and a half of it to feel all 5 plants once a week

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1.5 gallon to 10 gallon pots in total? And how much is your watering between feedings (how much is a qt. of water)?

Ok, I think I got it. Its quarter gallon.
I'll go away so I wanted to send my response for you to read before feeding them again.

This can be your problem combination with some other issues:
Half of the soil dry, half is wet. Some leafs have nutrient deficiencies. Some are trying to use that limited water for other purposes.

My suggestion is, spread your nutrients on all waterings instead of giving one time high and two times none.
First time, water them slowly with half or less than half dosage of nutrients until the water comes out from drainage holes. Don't poor all the water at once, give it slowly in 3-5 minutes. Assuming you have good drainage there with perlite and vermiculite. Each plant suppose to get about half gallon or 0.75 gallon at least before the water runs off. Wait until it gets dry, see the plants conditions. Takes 3-5 days to get dry completely. After that feed again like this. If they don't show any toxicity signs such as nuteburn set your nutrient level to normal dosage (spread the normal dosage on every waterings) and keep feeding carefully. If you see any nuteburn signs add one watering between feedings.
And another suggestion, your light distance is normal but its normal for normal plants. So, you raise your light up to 22-24" until they get back to normal. They don't have much water, they don't have enough power to take care of the light and heat. Let them rest a little. In 3-5 days you get the results and set the distance again slowly day by day.
Also be careful about the wind and the humidity. Don't let them dry.

Great thank you so much for the reply! Ya, I usually give each pot a quart of water about 2 times a week in between feedings.. I do it till there is run off but it sounds like I am not saturating the root ball.. I will do that

I will also raise the light

Thank you for the advice and I will try to update!

I don't know how you manage to get runoff with quarter. Maybe some underground rivers you had there. Make sure water coming from every holes. I feed once 1.2-1.3 gallon slowly to one plant in 3 gallon pot. Just 0.1 gallon maybe running off and that's because I'm waiting for other holes too and keep watering on their side until all release the water. Its taking 5-10 minutes. I do it every 4-5 days. No watering between. Instead, I'm spreading that total nutrients to every watering.

Please check your runnoff PH...soil without lime sometimes ph rises

Caveman, thank you for the response.. I did a mini flush on my plants, a gallon each and tested the run off yesterday, runoff PH was 6.3 and the water going in is 6.5 our tap water here has a TON of lime in it due to all the limestone in the area.. so our tap water has a PH of around 9 :-/

I have ran into PH issues a LOT in the past so I have been super careful on these plants