Does this look like nute burn to you?

[Mo9000]

Hi guys, a few days ago, this two 2 week old plant being grown in coco/perlite started showing signs of what i was sure was a nitrogen deficiency, with the very bottom leaves turing yellow from tip to base, and then eventually turning crispy. I have been feeding since the second set of true (serated) leaves appeard, with a 6th of the recomended dose on the bottle. I found it very odd that signs of nitrogen deficiency would be showing this early in the plants life, considering ive been feeding every watering since i started to feed. It really didnt look like nute burn at the time when the first set of true leaves started yellowing, there was no yellowing on any other leaf tips, just the lowest set. So i bumbep up the nutes to a quater strength, but now its starting to look a bit like nute burn. It still has the pale green and eventually yellowing lower leaves, but with burnt looking crispy edges like nute burn, meanwhile the top growth is darkish green and healthy looking. So im a bit confused now on what the actual problem is here, and how to fix it, if anyone can help identify and/or tell me how i can fix, or prevent this problem in the future. The plant was looking 100% about 5 days ago and now its condition has rapidly declined, with the lower leaves looking awful. PS im not really too interested in trying to save this plant, i would rather start from over and grow a healthy plant from start to finish (if i can) this is my first time growing in coco and indoors, so i have a lot to learn, but I have grown outdoor soil plants for years. This is the second plant Im growing in my setup with the other being about 2 months old which is not doing well either. But yeah right now I'm just trying to gain much knowledge as possible on how to identify all the problems I have been running into, and how to react to these problems, so I know for in the future, I'm taking these first few attempts as learning experiences more than anything else.

Growing in coco 60/perlite 40

CFL lighting, 340 watts or 18000 lumens

Using Biobizz- bio-grow organic liquid nutrient, derived from molasses 8-2-6 (its a Dutch company don't know how many of you would know it)

Using a cal mag nitrate supplement

Ph is 5.8

Using tap water

Watering twice a day usually

Feeding every watering with a 6th of the recommended strength on the bottle at the beginning and now at quarter strength.

Any help with identifying what this is and how to fix as well as any pointers to things that I may be doing wrong or could do better is much appreciated, thank you.

 

[cannn]

I know its coco so its very hard to overwater but it looks like you may be managing. Id cut down watering to once every other day or once a day if necessary. As for the nutes i cant comment much. Never grown in coco but the doses your starting at sound reasonable. Might want to make it every other water though. Coco holds nutrients and since your plant doesnt use all of what its given some nutrients can buildup in the coco and start causing problems if theyre not occasionally watered plain water.
Nute burn would usually start out looking like this, but your issue really looks like over watering to me.

 

[Mo9000]

I know its coco so its very hard to overwater but it looks like you may be managing. Id cut down watering to once every other day or once a day if necessary. As for the nutes i cant comment much. Never grown in coco but the doses your starting at sound reasonable. Might want to make it every other water though. Coco holds nutrients and since your plant doesnt use all of what its given some nutrients can buildup in the coco and start causing problems if theyre not occasionally watered plain water. View attachment 4038156
Nute burn would usually start out looking like this, but your issue really looks like underwatering to me.

Cool thanks, I actually made a mistake is the post, meant to say watering every 2 days not twice a day, do you think that watering twice a day would still be underwatering? Did you not mean to say overwateting?

 

[cannn]

oh yeah sorry i meant overwatering i was really stoned lol. Every 2 days shouldnt be too much in straight coco from my knowledge but with perlite im not sure and really what do i know about coco.

@rkymtnman can help you.. Just wait a while im sure he'll pop in soon

He does coco dtw

 

[Mo9000]

oh yeah sorry i meant overwatering i was really stoned lol. Every 2 days shouldnt be too much in straight coco from my knowledge but with perlite im not sure and really what do i know about coco.

@rkymtnman can help you.. Just wait a while im sure he'll pop in soon

He does coco dtw

Cool, thanks a lot man!

 

[rkymtnman]

Using Biobizz- bio-grow organic liquid nutrient, derived from molasses 8-2-6 (its a Dutch company don't know how many of you would know it)

actually, i tried coco drain to waste but hated it.

one thing i would change would be your nutes. i'd go with synthetic, not organic. and something specific for coco since it does have different needs.

are you in holland? house and garden makes a good coco formula. as does canna. or you can use H3AD's formula with GH micro, bloom and epsom salts.

has the problem gotten better or worse?

are you feeding so that you get about 20% runoff in coco? that's important.

and if you ever need to flush coco, do so with very weak nutes and not plain water.

 

[Mo9000]

actually, i tried coco drain to waste but hated it.

one thing i would change would be your nutes. i'd go with synthetic, not organic. and something specific for coco since it does have different needs.

are you in holland? house and garden makes a good coco formula. as does canna. or you can use H3AD's formula with GH micro, bloom and epsom salts.

has the problem gotten better or worse?

are you feeding so that you get about 20% runoff in coco? that's important.

and if you ever need to flush coco, do so with very weak nutes and not plain water.

Yeah i was also a bit skeptical on using organics in coco, but most people ive asked about it who have used organics themselves in coco say it usually doesnt cause any problems, and can work just as well as synthetic, a friend of mine grew a few plants using the exact same nutes that I am using, and they turned out great, growing healthily from day one to harvest without any problems.

And no im actually in a country called south africa, right at the southern tip of africa, so yeah dont have too many options in terms of nutrients with only a few hydro stores within my vicinity. These sorts of things aren't very well catered for here.

But im pretty sure ive identified the main problem to be that my humidity was way too low, (leaves were super dry and crispy feeling) along with the heat being a bit high, which also lead to a boron deficiency which i know is rare but I made another post about it and most people agreed that it was a lack of boron for sure, which only really occurs when the humidity is very low.

But now ive just put a bowl of water with a fan blowing over it next to my one remaining plant and it seems to be recovering super quickly with all the leaves softening up a bit and no more brown or yellow tips and edges appearing. Im not sure what was wrong with the plant i posted the pics of , but it just kept getting worse so I killed it off.

And yeah I make sure I always get about 20 to 25% runoff every watering.

Thanks for the help man! appreciate it.

 

[rkymtnman]

But now ive just put a bowl of water with a fan blowing over it

you can also hang up a damp towel too in your tent/room if you need to raise humidity.

can you buy a humidifier at a store near you? that would be more of a permanent solution.

sounds like you got it under control! good luck

 

[Mo9000]

you can also hang up a damp towel too in your tent/room if you need to raise humidity.

can you buy a humidifier at a store near you? that would be more of a permanent solution.

sounds like you got it under control! good luck

Cool thanks, ye ive been using wet towels too, and im looking into getting a humidifier soon, this is just temporary.
Thanks!