Any Ideas?

tehcheese10 · Apr 9, 2021

Hi everyone,

My autoflowering plant is about 9 days old and a few days ago I started to notice some of these spots. On a previous plant I had very similar spots and was able to fix it by lowering the PH and adding some CALMAG as I was told it was likely a calcium deficiency. I tried to do the same thing with this plant but have not seem similar results any ideas?

5.5-6.0 PH
20/4 light schedule
1/4 recommended nutes via Dyna-Grow
2.5ml per gallon of CALMAG

I just flushed my system yesterday, hoping to see some improvement.

Massachusetts86 · Apr 9, 2021

tehcheese10 said:
Hi everyone,

My autoflowering plant is about 9 days old and a few days ago I started to notice some of these spots. On a previous plant I had very similar spots and was able to fix it by lowering the PH and adding some CALMAG as I was told it was likely a calcium deficiency. I tried to do the same thing with this plant but have not seem similar results any ideas?

5.5-6.0 PH
20/4 light schedule
1/4 recommended nutes via Dyna-Grow
2.5ml per gallon of CALMAG

I just flushed my system yesterday, hoping to see some improvement.

Are you spraying the leaves with water? Or possibly the nutes your giving burned some roots and this its affecting it. The flush was a good call. Should bounce back in no time my man.

Massachusetts86 · Apr 9, 2021

I also discovered that 6.5-6.8 ph (ideal pj for most plants) isn't how.my auto caramelicious likes it...it prefers 5.5-5.8 it started doing much better with more acidity than alkaline. Dig into info with someone who has grown this on a regular and you'll find your best answer. EVERY plant is different in some way. Just my thoughts, happy growing

tehcheese10 · Apr 11, 2021

Massachusetts86 said:
Are you spraying the leaves with water? Or possibly the nutes your giving burned some roots and this its affecting it. The flush was a good call. Should bounce back in no time my man.

Nope not spraying the leaves. This is my first time using Dyna grow, maybe that's the problem. On my last grow I used Fox Farm and Calmag and once the Calmag was introduced I was off and running.

Unfortunately I am still seeing these spots appear on new leaves, not really sure what to do at this point. Maybe another flush and introduce Fox Farm?

Massachusetts86 · Apr 11, 2021

tehcheese10 said:
Nope not spraying the leaves. This is my first time using Dyna grow, maybe that's the problem. On my last grow I used Fox Farm and Calmag and once the Calmag was introduced I was off and running.

Unfortunately I am still seeing these spots appear on new leaves, not really sure what to do at this point. Maybe another flush and introduce Fox Farm?

I agree man. If it were me I'd flush and stick with what worked before. I only use Fox farm and stick with it because its so reliable. I couldn't say with confidence that any other product is good or bad as I've never used them. Sorry I couldn't help more my friend.

tehcheese10 · Apr 11, 2021

Massachusetts86 said:
I agree man. If it were me I'd flush and stick with what worked before. I only use Fox farm and stick with it because its so reliable. I couldn't say with confidence that any other product is good or bad as I've never used them. Sorry I couldn't help more my friend.

All good, appreciate the feedback.

Massachusetts86 · Apr 11, 2021

tehcheese10 said:
All good, appreciate the feedback.

Have you tried raising the ph? Too low or high doesn't allow roots to take in nutes as needed, and will cause the deficiency. I just re read the original post and maybe that could be the problem.

tehcheese10 · Apr 11, 2021

Massachusetts86 said:
Have you tried raising the ph? Too low or high doesn't allow roots to take in nutes as needed, and will cause the deficiency. I just re read the original post and maybe that could be the problem.

Giving this a try before I flush, fingers crossed. I guess I always figured if you were in between 5.5 and 6.5 you were good.

Massachusetts86 · Apr 11, 2021

6.5 to 6.8 is perfect in my opinion. You might see the tables turn after doing that. Keep us posted

rkymtnman · Apr 13, 2021

tehcheese10 said:
This is my first time using Dyna grow,

are you using dyna-gro Grow formula? Foliage Pro is the better formula for weed.

tehcheese10 · Apr 13, 2021

rkymtnman said:
are you using dyna-gro Grow formula? Foliage Pro is the better formula for weed.

Yes I was using Dyna-gro Grow Formula. Seemed to work initially. I did another flush last night and went back to Fox Farm 1/2 of the recommended nutes and everything seems to be back on track.

Moving forward I will just start from the beginning with Fox Farm

rkymtnman · Apr 13, 2021

tehcheese10 said:
Yes I was using Dyna-gro Grow Formula. Seemed to work initially. I did another flush last night and went back to Fox Farm 1/2 of the recommended nutes and everything seems to be back on track.

Moving forward I will just start from the beginning with Fox Farm

7-9-5 isn't the best ratio for cannabis.

use whatever works for you.

MustGro · Apr 13, 2021

Massachusetts86 said:
6.5 to 6.8 is perfect in my opinion. You might see the tables turn after doing that. Keep us posted

@tehcheese10 that's a water grow right? Don't let your PH get over 6 in hydro or you'll get interveinal chlorosis from your iron getting locked out. Your PH range of 5.5 to 6.0 is right on. I veg at 5.8 and flower 5.4-5.6 in hydro. A PH under 5 will make iron and manganese toxically available to the plants also.

Massachusetts86 · Apr 13, 2021

MustGro said:
@tehcheese10 that's a water grow right? Don't let your PH get over 6 in hydro or you'll get interveinal chlorosis from your iron getting locked out. Your PH range of 5.5 to 6.0 is right on. I veg at 5.8 and flower 5.4-5.6 in hydro. A PH under 5 will make iron and manganese toxically available to the plants also.

oh jeez. Hydro is a lane i know nothing about, thank you for highlighting that for me. My squinted eyes must have missed that fact. Lol

MustGro · Apr 13, 2021

Massachusetts86 said:
oh jeez. Hydro is a lane i know nothing about, thank you for highlighting that for me. My squinted eyes must have missed that fact. Lol

I wasn't sure from the pic if it was hydro or not, all good.

tehcheese10 · Apr 15, 2021

MustGro said:
I wasn't sure from the pic if it was hydro or not, all good.

So I thought I solved this problem but these spots keep appearing. They begin and the tip of the leaves and move inward.

PH between 5.5-6.0
1/2 Fox Farm recommended nutes
20/4 light schedule
2.5ml of cal mag per gallon

No idea what to change next.

rkymtnman · Apr 15, 2021

tehcheese10 said:
No idea what to change next

is this on the new growth? or just the old bottom leaves?

if it's on the new growth, take a pic of that.

tehcheese10 · Apr 15, 2021

rkymtnman said:
is this on the new growth? or just the old bottom leaves?

if it's on the new growth, take a pic of that.

rkymtnman · Apr 15, 2021

those white dots on the end of leaf tips are weird. also looks like some nute burn too.

are the roots OK?

have you scoped for any bugs on the underside of the leaves?

and your pH is accurate too?

tehcheese10 · Apr 15, 2021

Yeah I see a little nute burn, less worried about that.

I don't see any bugs.

I just recalibrated my ph meter. My 7.0 was good but my 4.0 was a little high.

Any Ideas?

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