Point me in the right direction plz

[EP3]

Thanks. Yes, it is the same plant.

 

[St. Tom]

hi bro if i can offer a little advice i would try a simpler nute program as i think your using a lot of different bottles i used remo nutes with coco for a good few years with superb results also a lot of your leaves won't recover on your girl its just a case of not letting it get worse also @Mañ'O'Green knows tons more about plants than me also @Waira should post some input for you

 

[EP3]

Yes, please do, thank you. I was considering changing nutes. Never seen those will look into them

 

[Mañ'O'Green]

I cannot tell if you are adding too much calcium or not enough magnesium. It is one or the other? I do not like the nutrients you are using either. Take a look at using Canna Coco. No matter which line you go with use only that line and use all of the products in the line.

I am going out on a limb here but try adding 1g per gallon of Epsom salt to your next nutrient mix for fertigation

 

[EP3]

I am not so keen on these cx nutes either. Had 3, well 4 but dog ate 1, goes at this and none have been good. Last ones looked dark green in colour, too dark green though. This time I used the canna cal/mag and caused this yellowing(only know that cos of you) dropped that straight away. I stopped the mighty growth enhancer too as per feed chart a week after starting bloom nutes, it's an N and Ca booster.
Anyway, defo looking at new nutes for next run.
I have nothing to loose with adding Epsom salts? Mrs has some for her feet, unscented. Is that a USA gallon? So I can convert to litres.
Regards
EP3

 

[Waira]

Yes, please do, thank you. I was considering changing nutes. Never seen those will look into them

... a long case here!....

So, let's back up mate... First, are you generating 15-20% run-off each time, and measuring the pH and EC of it, and comparing it to what those are going in?
Coco cannot be treated like true soil, it's not "soil" at all, in fact it's called soilless medium... Typically the idea is to feed often, daily even, at milder dosages with lots of run off to help purge out excess nute salts, replace what's been taken up, and maintain the pH... Coco breather super well, and this regular flow through of feed soln. also draws in fresh air into the coco as it drains.
Coco also has peculiar cation exchange capacity (CEC) properties, namely strongly binding Ca and to a lesser degree, Mg, to it's particles... The coco needs to saturate itself with these ions in order to start the proper give and take exchanging, otherwise it may keep Ca/Mg from being absorbed...
Coco in NOT an easy medium to work with, and is a SOB to fix if the feeds, salt build-up and pH are off... This is why you sweat every input and output!
Too much salt load in there will start atagonistic uptake issues, where certain ions will interfere with the uptake of others triggering burn and apparent defc's even though the "defc." nute may be present... pH also strongly affect nute uptake, and in coco, needs to be around 6.0...

So, is it the 2-part system you're using? Anything else adding into the EC/ppm load? What's the run-off amount in volume, also EC and pH?
....Symptoms look like a micronute defc., likey Zn from the looks of it. Question is, lockout, or lack of? Micronutes are mostly immobile within the plant, can't be transloctated to new growth from older tissues, so syptoms usually show on tops first and worst...
....No epsoms, this is not a Mg or S issue, that will fuck things up worse probably!
.... is you pH meter calibrated recently? EC/TDS don't need it very often, but if you unit is old, or tired batteries, it can go wonky on readings as well....
Until we know the critical info bits here, it's hard to say what step to take next... Worst case you'll have to do a major flush, which in coco need to be done with a weak feed solution with Ca-Mg, never ever water alone... BTW, what's your water source, pH, ppm?

Flush soln. suggestion is RO/DI water (low ppm/EC), with 150ppm Ca-Mg + 150ppm nutes, pH 6.0; pour through until run-off is at or near input values... this is an attempt to 'reset" the CEC, and purge out excess salt crap and get the coco back on track,...

In the future, if you must use coco, use nute dedicated for it, they cover the Ca-Mg bases better,.... have you read up on coco use?
A good quality soil is an simpler way to go, and far less labor intensive! There are a few nice products that can be mixed in and cooked a bit to make it a "super soil", nearly water-only... examples: KIS Organics Nutrient Pack (USA), Plagron SuperMix (EU)....

 

[EP3]

Thank you for that. I fertigate every day with 1.5-2l per day to 10-20% run off. Tap water is soft and is 40ppm truncheon out of tap PH 7.2. Was adding canna cal mag to 150ppm then adding the full line of CX nutes. The canna stuff was knocking the balance out so dropped it and just added the full line of nutes. Calibrate both my meters every 3 fertigations and store ph pen in storage solution too.
Both grow and bloom nutes are single part bottles for coco.
My ph has always gone in between 5.9 and 6.1, when I take a ph reading of run off it is usually about 6.1 and ppm run off I.e last one was 850ppm and out was 290ppm.
These are only readings though with run off water BTW
Currently fertigating at just under1.3 ec.

 

[Smoking Frog]

Looking at your grow from my also newbie eye (5 grows), it seems really complicated to measure run off, ppms in and out...
I started with coco also,GH trio,Cal mag and PH up-down,nothing else.There is a GH trio feeding chart on another site that is stupidproof and gave this newbie amazing results right from the start.You just follow the recipe and smoke the results!
Growing weed for a beginner shouldn't be as complicated as your grow is going IMO.
KISS principle is really applying great when beginning growing weed!
Good luck man and Merry Christmas!

 

[EP3]

Well it just gets worse and worse. Decided on a new range of nutes for next try. On the advice and proven success that @St. Tom has had I am going to give Remo nutes a crack and bin the lot of those CX. Obviously there is still one critical element that needs tuned up, me!! Lol.

 

[St. Tom]

Well it just gets worse and worse. Decided on a new range of nutes for next try. On the advice and proven success that @St. Tom has had I am going to give Remo nutes a crack and bin the lot of those CX. Obviously there is still one critical element that needs tuned up, me!! Lol.
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I wouldn't judge them leaves as they will never get better but it's more the new growth to concentrate on . also I think on your next run with remo as long as your putting the right strength food in to run off you will be golden also how old are these girls now