Is this a nitrogen toxicity

Hey ho, this is my first grow and after some starting problems because of wrong nutrients the plants take off. All looking good but one folding down the leaftips. I am not sure if that is a nitrogen toxicity, maybe someone with more knowledge knows better. I did flush with pHed calmag water.

Some Infos:
4th week of veg
Flora trio nutes with calmag
Coco + perlite 70/30 in fabric pots
Ec 1,2
Ph 5,8 - 5,9
Light is about 50cm from the plants

Rakklezek said:

Hey ho, this is my first grow and after some starting problems because of wrong nutrients the plants take off. All looking good but one folding down the leaftips. I am not sure if that is a nitrogen toxicity, maybe someone with more knowledge knows better. I did flush with pHed calmag water.

Some Infos:
4th week of veg
Flora trio nutes with calmag
Coco + perlite 70/30 in fabric pots
Ec 1,2
Ph 5,8 - 5,9
Light is about 50cm from the plants
View attachment 4899256

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I feed my 4ft tall plants with 1,3 EC fyi. I start somewhere around 0,6 but also in much smaller pot. You should feed daily with significant runoff, somebody can call it flush, for me its just 40-50% runoff. Sometimes even more depends on its EC. In your case it can cause issues when you have small plant in big pot. Hopefully 4weeker has roots developed enough to not get drown. Forget forever about plain or only calmag water in coco. This is good place to start: cocoforcannabis.com
Good luck!

My plants are that size and I just raised my EC to 0.6.

True story. My first coco grow (5 yrs ago) a guy told me he fed 1.4EC, start to finish. I believed him and followed what he said. Stupid.
This is what that did:


Then a very nice gentleman here explained the error. I mixed up a batch of .8EC and fed until runoff matched input. Fixed my plants and they went ballistic. (these were auto's btw, so it was extra scary as my 2nd grow, 1st in coco.)

Ty you both, for your advise. I bought a Reverse Osmosis system, because when I use my tap water with the Plan of cocoforcannabis then my EC goes to 1.4. Now with the RO water it is exactly on 0.8 EC and a PH of 5,85 dont even need to tweak it. I hope my Autos now grow like yours creature. And thanks Buk for the tip with cocoforcannabis, where reading there a lot the last days.

Rakklezek said:

Ty you both, for your advise. I bought a Reverse Osmosis system, because when I use my tap water with the Plan of cocoforcannabis then my EC goes to 1.4. Now with the RO water it is exactly on 0.8 EC and a PH of 5,85 dont even need to tweak it. I hope my Autos now grow like yours creature. And thanks Buk for the tip with cocoforcannabis, where reading there a lot the last days.

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Read it through really carefully and than again... you get the imagination what is going on and how to make it work as hydro medium. I believe (can be wrong coz I have no chance to get GH nutrients) that Nectar is only to level out the calmag in sense of NPK. When your tap is under 0,3 and your base nutrients have enough of calcium and magnesium, than you can skip both. Again I can be wrong, I am in Europe so can not test it in real run. RO system puts you far further and also elimates guessing if your water is shit or not. Also do not to be afraid of water enough, that ratio for input/runoff given on cocoforcannabis.com is straight BS!