Starting to yellow leaves, brown spots

So I've noticed that some of my girls leaves are starting to turn a yellowish color with brown spots forming. Basically I posted about a week ago saying the tips were starting to burn so 2 people suggested just watering with no feed twice then get back on a normal schedule. I watered them twice and then I came to feed them today and this is happening. I don't know if its a nutrient deficiency from me not giving nutes on the second watering. If anyone sees a nutrient deficiency in this would you mind telling me what you think it is and how you would correct it?

I always see people say it's this and that deficiency or over feeding but I don't see many ways to fix the problem. Anyways, any tips are appreciated!

The other thing I thought was that maybe the light was too close cuz I had it about 12" so I moved it up to about 20" away from the top canopy now. Idk if it will make a difference but ill check tomorrow after they eat up some of the nutes I just gave them.

How long are you into flower?
What’s the nute strength?
Burnt tips and yellowing isn’t uncommon as you get further along.

drsaltzman said:

How long are you into flower?
What’s the nute strength?
Burnt tips and yellowing isn’t uncommon as you get further along.

Click to expand...

I'm at about a month right now. I'm using the fox farm trio. I usually do 10ml of each because it wants 15ml of the grow big, 10ml of big bloom, and 10 ml of tiger bloom per gallon so I figured if I did 10ml of each over a span of 2 gallons I would be cutting the suggested amount in half and I'd be cutting the grow big in 1/3 as to not over feed them.

And that was my other thought. I see a lot of posts talking about leaves dying off as the get older. Maybe I'm just stressin over nothing. They just haven't had basically any problems throughout the whole grow so one thing that looks off makes me think I messed up.

FreshOffTheCut said:

I'm at about a month right now. I'm using the fox farm trio. I usually do 10ml of each because it wants 15ml of the grow big, 10ml of big bloom, and 10 ml of tiger bloom per gallon so I figured if I did 10ml of each over a span of 2 gallons I would be cutting the suggested amount in half and I'd be cutting the grow big in 1/3 as to not over feed them.

And that was my other thought. I see a lot of posts talking about leaves dying off as the get older. Maybe I'm just stressin over nothing. They just haven't had basically any problems throughout the whole grow so one thing that looks off makes me think I messed up.

Click to expand...

Half nutes from start to finish always works for me.
I only have issues when I give them full strength.
There’s a lot of opinions on nutes from guys a lot smarter than me.
For my grows, which are 3 gallon air pots in a 2x4 tent under 300w COB LEDs, I use one nute.
Floranova Bloom from GH. I use it from start to finish.
It has everything your plants need including all the micros.
The NPK is balanced for both veg and flower.
I find the complicated trios and blends etc... are overkill.
But I think you’re doing it right. Half strength all the way.
When they fade to yellow that’s normal.
When you get stripes and veins changing color is when you need to work harder.

drsaltzman said:

Half nutes from start to finish always works for me.
I only have issues when I give them full strength.
There’s a lot of opinions on nutes from guys a lot smarter than me.
For my grows, which are 3 gallon air pots in a 2x4 tent under 300w COB LEDs, I use one nute.
Floranova Bloom from GH. I use it from start to finish.
It has everything your plants need including all the micros.
The NPK is balanced for both veg and flower.
I find the complicated trios and blends etc... are overkill.
But I think you’re doing it right. Half strength all the way.
When they fade to yellow that’s normal.
When you get stripes and veins changing color is when you need to work harder.

Click to expand...

For sure i won't stress too much.

Do you know if the buds will get much fatter than they are now? Cuz if not they're like maybe 2 gram nuts for the colas lol

If you’re at 4 weeks they should start swelling up in the next week. You’re only half way through.
One of the mistakes I made early on was not being patient and trying too many things to make them grow faster.
They’re on their own time schedule.

drsaltzman said:

If you’re at 4 weeks they should start swelling up in the next week. You’re only half way through.
One of the mistakes I made early on was not being patient and trying too many things to make them grow faster.
They’re on their own time schedule.

Click to expand...

Yeah I havent been doing anything differently as far as feeding schedule, changing environment, or anything. Pretty much the only difference was introducing the the other 2 nutrients from the ff trio. But for sure, I'm excited to see the next coming weeks for the girls

drsaltzman said:

If you’re at 4 weeks they should start swelling up in the next week. You’re only half way through.
One of the mistakes I made early on was not being patient and trying too many things to make them grow faster.
They’re on their own time schedule.

Click to expand...

Also, what could be causing the brown spots? I just looked em over again and it seems more leaves are producing those brown spots like in pic #1 on the top right of that leaf in the pic. They're developing them in the middle of leaves. Not significantly but I did see a few new spots.

It's actually getting worse. Does anyone know how I can fix this? Would adding calmag to my feed help at all?

FreshOffTheCut said:

It's actually getting worse. Does anyone know how I can fix this? Would adding calmag to my feed help at all?

Click to expand...

how did it turn out mine are doing the same thing

FreshOffTheCut said:

I'm at about a month right now. I'm using the fox farm trio. I usually do 10ml of each because it wants 15ml of the grow big, 10ml of big bloom, and 10 ml of tiger bloom per gallon so I figured if I did 10ml of each over a span of 2 gallons I would be cutting the suggested amount in half and I'd be cutting the grow big in 1/3 as to not over feed them.

And that was my other thought. I see a lot of posts talking about leaves dying off as the get older. Maybe I'm just stressin over nothing. They just haven't had basically any problems throughout the whole grow so one thing that looks off makes me think I messed up.

Click to expand...

I also run salt-based ff liquid nutes in a soiless mix (coco/sphag/perlite/promix + some other granular goodies) and usually mix my fertigation solution in 7gal buckets by # of bottle cap-fulls of each product with an ec meter targeting an EC of 0.8 to 1.0 mS. In flower, this is usually (per 5-7gal) about 2-3 caps tiger bloom, 2 caps big bloom, and 1 or 2 caps calmag. You may be overfeeding?