Confused !!!

[Clix]

Hello all I am having troubles figuring out what issue this is I am using AN's Ph perfect coco grow line along with some big bud for extra p and I beleive i have a deff in that as well as another/more ones along the way or possibly just a bad P deff ether way any input would be of great help I am growing in coco under led I was suplimenting with cal/mag but have stop as I suspect I was over doing it. heres some pics thanx peoples. I tried to get as many diff pics as possible to help with a whole plant view but my cam isnt great.

 

[Clix]

These pics give you an idea where on the plant its showing

 

[armanidog]

The tips curling down mean too much nitrogen. The yellow spots are probably nutrient burn. Skip the next feeding. Flush with some 6.5-7pH water x1. Maybe skip several feedings until they look better. Then start with 1/4 strength cal/mag, wait a day then 1/4 strength Big Bud.
How much are you watering?
I looked up the perfect ph cocco grow. I could not find the strength of the nutrients included.

 

[Clix]

The tips curling down mean too much nitrogen. The yellow spots are probably nutrient burn. Skip the next feeding. Flush with some 6.5-7pH water x1. Maybe skip several feedings until they look better. Then start with 1/4 strength cal/mag, wait a day then 1/4 strength Big Bud.
How much are you watering?
I looked up the perfect ph cocco grow. I could not find the strength of the nutrients included.

Sooo this is wear things get weird with my grow. I have always had to use extremely low amount of nutes. I have had a few successful grows. I'm only using 1/2ml per 10 L of part A and 1ml per 10 L of part b and 1ml per 10L of big bud. I just started watering once every couple days I actually have reversed some of the nitrogen problems it was worse put I backed off the strength of nutes from 1ml part A in half. The recommended dose is 4ml per 1L of water. I cant even do 1/4th that without burning my plants and have severe nito tox. I have looked on many forums and there is three or four people that have the same problem I have they are using R/O still same problem I am using tap but have tried distilled in the past with same results. So its been hit and miss trying to figure out proper dosing and feeding schedules. I was only watering once a week prior to now. I am growing in coco and I am trying to work it up to watering everyday to treat it like a hydro grow so far things have been dicey lol

 

[Clix]

Oh and I am watering 5L at a time about 30% run off. AN COCO grow is 3 0 0 part A and 1 2 4 part B . Big Bud coco is 0 4 4

 

[Ronin]

What size container are you using?
Have you ever checked the ph of the nutrient solution before feeding?

 

[Clix]

What size container are you using?
Have you ever checked the ph of the nutrient solution before feeding?

30 L container and the nutes are ph perfect line so the ph can be pretty much anything between 4 and 8 and everything is still supplied through nutrient binding and chelation. I believe currently the water going in is around 7 because of the Cal/mag plus raising it.

 

[Ronin]

If it were my lady I would ph my next few feedings at 5.8.
The sweet spot.
Without knowing where you coco's ph is at, the safest place is 5.8
I'd also recommend using some form of Myco.
It'll help with nutrient uptake at the roots.
I wouldn't grow without it.

 

[Waira]

Hi Clix-- ...looking at the symptoms, the lower leaves have what looks to me like some P defc. happening; that large patchy brown spotting is typical,... I'm not sure if it's the camera color rendering, but the whole plant pics showing that pale coloring on the whole upper half could be Fe or S defc. starting as well,... as you know, coco is nutrient poor, and so sometimes, even the fert's alone won't provide enough micronute's,... I recommend you getting something like Earth Juice Microblast, which is a dedicated micronute supplement... other than that, there are several products that have Fe in them, usually along with other vital metals,... and Epsoms salts (MgSO4) can provide the extra S,... as he's a coco expert, and I'm not, let's see what Ronin says first... >>> Ronin my friend, thanks for helping! ...do you have a favorite for extra micro's? And I imagine some epsoms are okay in coco, with an eye to reducing other Mg inputs at that time..?

 

[Ronin]

Happy to help @Waira
Gotta maintain the balance for all the trouble I cause elsewhere
I personally use O.G. Tea Veganic Special Sauce for my micro booster.
The AN line is huge. I'm sure there is something within the line up that is a micro booster.