Plants are having some issues with brown and yellow spots.

[LuluLuke]

Hi all, first time grower, around week 7 here and the plants have been developing some very bad issues with the leaves. Not sure if it is a deficiency or a PH issue ( i do test), or perhaps nute burn ? Bu here are some photos; hopefully i can get some answers and continue with the grow.

On a side node:
These plants don't look like they will be ready to harvest anytime soon, I've read that autoflowers are ready to harvest at week 10 and being flushing at week 8; but these girls don't look like they have produced any buds yet during flowering - at least proper looking ones - and I am wondering if this is normal for some people ?

My strain is Green Gelato.

As for nutrients I will attach a photo of what i use.
Ratios are:
Green 0.7ml per L
Pink 2.1ml per L
Purple 1.6ml per L

Thanks

 

[namvet25]

As long a it's only a couple leaves don't worry unless it spreads. They have just started to bloom so it will take awhile before there ready toharvest

 

[Mañ'O'Green]

They look to be over-fed and starting to lock-out with excessive nutrients back off 20% and be sure you are feeding balanced nutrients. PH can also be an issue. It might be best if you give us some more information?

Please fill in this form: (copy and paste part is below, this first one tell what specifically to include)

-Problem: (brief description)
-Medium/grow method: soil; soilless-- coco, or peat based like Promix, etc. (please provide the actual product name); DWC, NFT, etc.
-Feed and supplements used: include brand, dosage/strength, frequency of feeding and watering (alone); method-- by hand, drippers, rercirc' or drain-to-waste,... N-P-K #'s too if you can!
-Water source: RO/DI; tap- dechlorinated-?..... EC or TDS reading; pH (don't bother with this on RO/DI, do bother with TDS/EC though to confirm it's working well enough)
-Strain and age
-Climate: night and day ambient T and RH%; res' temperatures; any extremes in T/RH% exposure
- Light used: HID, LED, COB, combo of,... wattage; light cycle hours (20/4, 18/6 , etc.); distance to tops....
-Additional info: PH in the root zone. How long have the plants been affected?...How fast did symptoms appear?... Anything else you think might be relevant..

--Pictures including WHOLE PLANT PICS, and troubled leaves.. use normal light or flash as other light sources ruin color rendering, critical for diagnostics! Turn off the grow lights.

✂ - - - - - - - - - - -
(copy and paste)-->

Problem:

Medium/grow method:

Feed: and supplements used:

water source:

PH in the root zone:

Strain/age:

light used:

Climate:

Additional info:

 

[LuluLuke]

Problem:
Leafs are forming brown and yellow spots.

Medium/grow method:
BioBuzz Light

Feed: and supplements used:

TriPart 3 part nutrient
FloraMicro: 5-0-1
FloraBloom: 0-5-4
FloraGro: 3-1-6
CalMag plus : 2-0-0

Feed every other day or when soil is dry. 1 Litre per plant. Ratios
Micro: 1.4ml
Bloom: 2.1ml
Gro: 0.7ml

Last 2 feeds i was giving each plant 1ml of cal-mag.

water source:
Tap (Ph Balanced)

PH in the root zone:
What is this and how do I measure ?

Strain/age:
Green Gelato - both plants - 54 days

light used:
Phlizon 600W - actual output is 100W i believe based on what other told me.

Climate:
RH range - 47% to 53%
Temp range - 20 to 22 degree Celsius

Additional info: