Need help with a little diagnosing

[Hmpleafy]

Hi there, I'm a new grower and I have 2 gorilla autos, growing in lightmix with biobizz nutes on 10L pots.

Did some LST, selective defoliation and leaf tucking.

avg temp: 25-28C
avg humidity: 50 %

One of the gals is slightly ahead of the other;
I've been watering them whenever the soil feels dry and the pots feel light;
That's been around 1.5L every other day. (this past week);
Feeding 0.5 ml/l grow + 1.5 ml/l Bloom + 0.5ml/l Top Max; (i upped the nutes this week, last week i gave them 0.5 grow + 0.5 bloom;
It's day 40 since sprout.

Been having some issues lately:
My top leaves look like they're clawing down and some of my bottom leaves have some yellowing on it as well as some brown spots as shown in the pictures.

 

[Mañ'O'Green]

You need to turn off the grow lights and use a daylight 5000K bulb for the diagnostic pictures.

What is your feeding schedule?

Your RH is too low for that much heat.

 

[Hmpleafy]

Thank you for replying, I'll send new pictures as indicated as soon as possible, in the meantime here's my feeding schedule.

Started feeding week 2
Week 2: 0.5ml/L Grow 2x week
Week 3: 1ml/L Grow 2x week
Week 4: 1ml/L Grow + 0.25ml/L Bloom 3x week
Week 5: 0.5ml/L Grow + 0.5 ml/L Bloom (First 2 feeds) | 0.5 ml/L grow + 1.5ml/L Bloom + 0.5 ml/L Top Max (last feed)

Also, I don't have a humidifier.

 

[Bill.de.Cat]

Thank you for replying, I'll send new pictures as indicated as soon as possible, in the meantime here's my feeding schedule.

Started feeding week 2
Week 2: 0.5ml/L Grow 2x week
Week 3: 1ml/L Grow 2x week
Week 4: 1ml/L Grow + 0.25ml/L Bloom 3x week
Week 5: 0.5ml/L Grow + 0.5 ml/L Bloom (First 2 feeds) | 0.5 ml/L grow + 1.5ml/L Bloom + 0.5 ml/L Top Max (last feed)

Also, I don't have a humidifier.

Kitchen science..........evaporative humidifier...pan, washcloth, coathanger....it does work.

 

[tronN00dles]

As others have stated, your tent is a little on the hot-n-dry side. Also, 1.5L at a time seems a little low for plants at that stage. I'd be giving closer to 4L each watering by that time, granted I grow in 5 gallon pots. Are you getting any run-off with 1.5L? I always water to 10-20% run-off.

Also, are you checking the pH and ppm of your nutrient solution? You'd want to be in the ~500ppm range with a pH of 6.5 or so.

-tronN00dles