Could this be over feeding? Or some other stress?

[sleeplezz]

SOIL GROW

Strain - Northern Lights Autoflower
# of Plants - 8
Grow Type - Soil - BioBizz Light Mix
Grow Stage - Bloom
Bucket Size - 5 Gallon fabric dirt pots
Lights - Mars Hydro TS3000 LED (460 W from wall)
Nutrients - BioBizz - uses Grow, Bloom, TopMax, Heaven and Alg a Mix
Medium - Out of the bag Biobizz Light Mix soil
PPM - No Co2 added but very good ventilation
PH - 6.5
Water: RO water
RH - 45% to 55%
Room Temperature -78
Room Square Footage - 5 x 5 tent
Pests - None

Problem: A few of my plants are showing some signs of not doing so well. Please see attached pictures. There are some yellow and brown
discoloration on some leafs and the plants are overall quite small? They are 38 days old today.

I have been feeding them BioBizz from the BioBizz schedule but as they are autoflowers I have used about 30% less.

Happy for any ideas that you could share.

Thanks in advance and have a great day!

[Canuck147]

Overall they look great - last pic shows some kind of problem - could be overwatering. It's hard sometimes waiting for those larger pots to dry out - but - they should be totally dried out before watering. Roots like the oxygen.

Don't know about your grow medium or nutes - but - I give my autoflowers full strength nutes.

[CaptainWiese91]

How close is the light ?
but I agree with Canuck- they look fine.
could also be a watering problem as suggested

[MeEasy]

My 1st guess is they are getting into flower and at a point where they need less nitrogen and are burning a little bit but the last pic looks a little like your lights are a to close. If it is one or both of what I said it is a low level reaction so if you change things don't make big changes. Overall they're lookin good. my slightly educated guess Good luck

[sleeplezz]

Thanks guys for your feedback! Its my first time trying autos. I will try your tips. Its a bit tricky with hight of the light since the girls are so different in size, so some will come close and some a bit far, I will try to find some middleway.

Have a great day and thanks again!

[MeEasy]

Remember that you can always bend the tall ones, tie them down it doesn't hurt em. The next day you'll see the leaves turn flat to get more light kinda like a satellite dish.

[sleeplezz]

Thanks thats a good idea, will try on the tallest one!