Please help diagnose

[hjayu94]

Hi all! On third grow, going the best so far.. 3 weeks flower. Leaves on one plant in particular looking bad over night! I fed that night with 3mL/L of nutes. Instructions call for 4mL/L.. Most I've ever gone is 3.5 and it definitely shows sign of nute burn..

But any idea what's up with these leaves? Don't want the whole plant to go quickly.. thanks

 

[Chris Scorpio]

Plants nute needs change in flower

What nutes u using, do they have a schedule for flowering

 

[Emilya Green]

This doesn't look like a burn to me... it looks like at least 2 deficiencies that I can spot right off. That tells me you are not giving enough nutes or your pH is so far off the plants cant get at the nutes. I don't have a clue as to what 3ml of nutes looks like, especially not knowing the brand... so like Chris said, is there a schedule, and are you following it?

 

[hjayu94]

Thanks for the quick replies you two. Yes, I was thinking these leaves here were showing a deficiency.. and nute burn showed up slightly after feeding 3.5mL one time. pH should be good. I have pH perfect nutes and pH perfect soilless mix, plus I still take pH readings before feed. Never off by much at all. But will give more details....

Doing a 3 part nutrient system by Advanced Nutrients. Micro, Grow, Bloom. Also have B52 and CalMag.

The 3 part is weird.. it says to use all 3 of them, all the time, through out the plants life cycle. So why is it even a 3 part? I never understood that and asked about it in my journal.. no one else reading knew either. So I've done just that. All 3 say 4mL/L for plants after seedling stage. I slowly increased, never going beyond 3.5mL/L.

Added B52 at suggested 2mL/L for entire veg stage and stopped at flower. Instructions say to use vegging and weeks 3-6 flower only.

Used cal-mag at suggested 2mL/L a couple random times when leaves started showing signs of deficiency. (including this last feed!)

 

[hjayu94]

Ugh the leaves are going to crap quite quickly all the sudden.. Yikes! I will say it's most noticable on the biggest plant.. So yes, likely asking for more nutes.

 

[Chris Scorpio]

You need to find the online schedule

I've used that same line

Get the correct schedule, not what the bottles say

 

[hjayu94]

That is a good idea! I did just find this online however, and it actually says the same thing. Was right from advanced nutrients.com

 

[hjayu94]

Must just need to crank up to 4mL/L... And hope they don't go too bad before I can feed again

 

[Chris Scorpio]

I used the 2part, 4 jug system, not the 3 part, so mine was different

The reason they seperate them is they don't play nice with each other, thus need separation in different jugs

 

[hjayu94]

Ahh the seperation of nutes makes sense thanks!

I tried 4mL/L on the plant who was hurting. It got much worse after that, quickly.... Oh weed you confuse me

Tops of canopy still look good, but only a matter of time! Now, how strong do I feed the rest?!?

 

[Chris Scorpio]

The bad leaves will not look better...fyi

Watch for it to spread

 

[hjayu94]

Ya, but the rate at which theyre getting worse seems to have sped up.. So 4mL/L didn't seem to be good for them. Nice looking leaves are indeed continuing to get worse.

 

[hjayu94]

Perhaps I haven't given the heavier nutes enough time.. Will give it more of course and see what happens