First time grower - flowering and nutrient deficiencies. Please help!

[BeeZee]

5 weeks into flower with these Northern Light auto flowers. They are in 3 gallon fabric pots of ffof soil and are under LED lights. I have been giving them fox farm nutrients and have had leaf discoloring issues for the past 3 weeks just about with all of them. I am having a hard time figuring out which nutrient they are lacking in, as they all seem to show me different signs

My first question is, which nutrient deficiencies or problems are obvious to any of you? ( I keep the pH consistent, but my runoff PPMs are usually quite a bit higher than what I put it.. other than the leaf issues they seem fairly healthy I think?)

Second question, should I trim these leaves off or should I leave them since I am already about 5 weeks into flowering?


Thank you!

 

[BeeZee]

ALSO, do they look normal otherwise?? as in bud size and structure??

 

[Gingerbeard]

Howdy BeeZee Normal is relative. Yours look great but colas vary from plant to plant. Start watching for your hairs to turn brown and your trichome development.

Looks like you have all the nutrient burn and lock out issues. Not pH. But be not distressed. If you are using flowering nutes and not vegging, the buds are sucking up what nutrients they can from the fan leaves. So the leaves die. You are coming to the end of harvest, which is when your plants will do all this.
The fan leaves will also start dying. Turning nasty and curling up dead. It's just what they do.
Keep on truckin' with your flowering nutes.

 

[SoOrbudgal]

Afternoon in my zone I've had this issue from irregular watering. Not allowing soil to dry before watering and feeding again. Your plant had no training no topping or LST right? So that cola is looking good, can't tell much cause for me seeing the whole plant helps. Sometimes LED cause changes in the leaf which looks like a possible nute deficiency but it could simple mean the light might be to close. Raising it up for a period will correct it. Yes take the dead off with a scissor.
Good start, what brand of LED is it?

 

[BeeZee]

Yes, i did have some trouble figuring out a proper watering schedule at first, but i think I've got it down now for the most part. No topping or training whatsoever just because i read some things that said with autos it is better just to let them live their life since their lifespan is so short so i took that and ran with it!

The lights are spyder farmer sf-4000 LED and ive been keeping them about 18 inches. I will raise them some and see if that helps, and trim off the dead leaves!

Thank you for your feedback!

 

[BeeZee]

Well that does make me feel better, i was scared that it would make its way to my colas and start to wreak havoc but i will continue to keep them on their flowering nutes.

Do you have a recommendation as to when i should start flushing? As in when the pistils are a certain percentage of brown or trichomes a certain consistency??

Thank you for the help!

 

[Gingerbeard]

Depends on what you've been giving them. With the nutes I use, a single flush does it. I know other types like longer flushes. Me? I say about when you have most your trichs milky. You'll have good flush time, depending on how far you want your trichs to go amber. And that big subject is yours to decide with the following link. Oi-vey is that an opinion based subject.
https://www.growweedeasy.com/harvest

 

[BeeZee]

Thank you!