Problem with lower leaves turning yellow early mid stage plus gennerally leaves loosing her green color

[StevetheGrower]

Greeting guys

I want you to introduce the problem with the leafs of the plants turning yellow and loosing their color.. i have noticed that problem with grows in general ... right now my girls are autos 4 different from 420 buds. strains 2 pineapple express auto 1 og auto 1 big bud and 1 girl scout cookies and i am on almost 3 months old right now i am assuming that they are on 3-4 week of flower some 1-2 week i am watering every other day with nutrients. giving sensi a+b base(once week) + cal mag(same) + big bad(once a week) + bad candy(same) small doses 1ml/L 3liter water
My media is Coco with perlite and my lamp is fce3000 300w with dimmer running 40% now almost 70-80w temps are 21-22c and humidity 51-60% , pots are 15l

 

[LoveGrowingIt]

Some yellowing (chlorosis) is normal. The plant is moving nutrients from the older leaves to the flowers. Reproduction is their priority.

I can't see the leaf with the spots well enough to do more than guess it could be due to calcium deficiency.

 

[shooter64738]

Could be septoria, but it's usually more rounded. Are there any brown specs in the light colors?

 

[StevetheGrower]

yes in later stages when leaf keep dying brown spots are popping.. i will update with some photos

 

[PlumberSoCal2]

Greeting guys

I want you to introduce the problem with the leafs of the plants turning yellow and loosing their color.. i have noticed that problem with grows in general ... right now my girls are autos 4 different from 420 buds. strains 2 pineapple express auto 1 og auto 1 big bud and 1 girl scout cookies and i am on almost 3 months old right now i am assuming that they are on 3-4 week of flower some 1-2 week i am watering every other day with nutrients. giving sensi a+b base(once week) + cal mag(same) + big bad(once a week) + bad candy(same) small doses 1ml/L 3liter water
My media is Coco with perlite and my lamp is fce3000 300w with dimmer running 40% now almost 70-80w temps are 21-22c and humidity 51-60% , pots are 15l


View attachment 2335241

Pretty normal and probably nothing to worry about.

Blueberry Hash Plant

About a week or so to go

Starry Eyed

Sativa leaner so several weeks to go but take a close look at all the brown leaves. That's from growing in coco and due to work getting in the way I'm only able to water (fertigate) once to twice a day when 3-5 x's is ideal. Coco dries out quick which effects the lower leaves. It's really not a big deal and the flowers will be just fine.

 

[shooter64738]

yes in later stages when leaf keep dying brown spots are popping.. i will update with some photos

It could be nothing (or something else entirely) but it looks like it could be septoria. A fungal infection that eventually kills the plants. It can be treated and addressed.

It is normal for the leaves to lighten and yellow in flower, but the spots, with brown dots in them, make me suspicious.

Septoria info

 

[StevetheGrower]

Ok @PlumberSoCal2 thank you for your response your time and the informations you gave me appreciate also you 2 @shooter64738

Another problem is that leafs isnt fully green looking like this and i think may the lamp effecting them..

 

[shooter64738]

Based on these new pics, it looks like it could be mag deficit, but it would be very slight. Over watering slightly? Too much calcium or potassium will also interfere with mag uptake, or cooler temps can slow it down. The tips are turning down and yellowing, while the edges and interveinal space is lightening.

You could try a 2% solution of Epsom salt in a hand sprayer and try a foliar spray on one plant. If it improves, that's your culprit. If no change or keeps progressing, try something else, like less water, more heat, etc. Again I think its very slight, if it is a nute problem so adjust slowly and very slightly. In the past I've done more harm that good trying to 'fix' little things.
If it's processing this slowly, I now doubt it's septoria or the plants would be looking pretty rough by now.

 

[StevetheGrower]

shooter my boy thank you .... past years i had done a thread again same problem with leaves and another member of the forum told me to try epsom salts i ll give it a shot and see but girls seem to me stressed kind of i gave them a good amount of cal mag 2ml per liter and b 52 and bud factor x ..i think my problem is that i still cant regulate the light correctly .. i am saying this because when i am pumping 5 or 10% from dimmer girls immediatly react and the edges of the leafs turning down